Malicious PDF — malware analysis report

Static analysis result for SHA-256 86c7ec454b447246…

MALICIOUS

PDF

168.7 KB Created: 2021-03-16 18:53:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: f452435c517588482efc0693fbb2af31 SHA-1: 6ec28546583a27a0d63800d234568fa6e7feb6c5 SHA-256: 86c7ec454b447246fa5c37f62bd906aef19d4924227dfb606a706312fd1dd6ac
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing indicating it's an SEO redirector link, likely for phishing or malware distribution. The primary malicious URL identified is https://baarspo.ru/123?utm_term=film+ka+naam+batao+answer. While no scripts were extracted, the PDF structure and external URL suggest an attempt to lure the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8904

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://baarspo.ru/123?utm_term=film+ka+naam+batao+answer PDF link annotation
    • http://rijunoje.mygamesonline.org/panasonic_air_conditioner_service_guide.pdfIn PDF document text
    • http://bebetadiruj.mywebcommunity.org/golapip.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/ajihj77/nalubufumididoropexefubux.pdfIn PDF document text
    • http://gopusoduj.mygamesonline.org/persepolis_shah_1971.pdfIn PDF document text
    • http://fufejezonodim.mywebcommunity.org/convert_word_doc_to_paint.pdfIn PDF document text
    • https://cdn.sqhk.co/zodavujera/SNohb1U/dofalasere.pdfIn PDF document text
    • https://cdn.sqhk.co/nopavoboriru/gghdfzx/zasabufizunajetiw.pdfIn PDF document text
    • https://cdn.sqhk.co/namaboniki/PjfmDig/snes_classic_controller_adapter.pdfIn PDF document text
    • https://cdn.sqhk.co/figegixo/igi9m8u/vong_doi_cua_activity_trong_android.pdfIn PDF document text
    • http://simopuvoramawu.mywebcommunity.org/41417814143.pdfIn PDF document text
    • https://cdn.sqhk.co/pubisifibuj/jjggTNM/redbubble_pokemon_go_plus.pdfIn PDF document text
    • http://kogemotuju.getenjoyment.net/57950873434.pdfIn PDF document text
    • https://cdn.sqhk.co/nobukomorur/Ouchhjh/91924688727.pdfIn PDF document text
    • https://cdn.sqhk.co/fegukajebaj/WaEicXy/coloring_book_pages_christmas_ornaments.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/92217315454.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/pewusogofelefonutez.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/10551268043.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/free_lagu_black_leraikan.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/kahoot_answer_hack_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/how_to_draw_a_dog_step_by_step_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/fortnite_season_4_week_8_challenges_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/jalapil.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/automann_suspension_catalog.pdfIn PDF document text
    • https://s3.amazonaws.com/gavapozalilup/ruxipuporeludidipubudaga.pdfIn PDF document text
    • http://timojodabemisux.myartsonline.com/english_english_malayalam_dictionary.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10775 7444 bytes
SHA-256: f5ac45f160d4afd243284732022688f40b582d79bdaaf645d5a9a1ac9d62b7ec
font_01_sfnt_off00011a8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A8C 3188 bytes
SHA-256: 2f291ad1e21b247678000ed7a80e9dea74e782b977981c4c6b4c7298edb702eb
font_02_sfnt_off000125e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125E1 5084 bytes
SHA-256: ff127e03365b3ee17b2ff02ce9d0fb2aeeaf994b69551825f1177e82598bde43
font_03_sfnt_off000136e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136E5 6340 bytes
SHA-256: 58765afbf79dfac18aa2be5657ba4048cf3b195f9206c7e7e4c9fcdb971a68cd
font_04_sfnt_off00014675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14675 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_05_sfnt_off000151d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151D2 76644 bytes
SHA-256: 0416b6db58ae25b652092978d78eb1dced126c510196f66d58b53ae2948ae042
font_06_sfnt_off000225b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x225B7 12024 bytes
SHA-256: 03e7eb7a932d14ce6b52b27076671ef1544e48f1500a2a89105ed6ce42767f8f
font_07_sfnt_off00024e36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24E36 20020 bytes
SHA-256: f8a421c14590b6542bff5954db4a78496fb1c3e665833f81d992d3c9c88de2de
font_08_sfnt_off00026fb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26FB5 9952 bytes
SHA-256: 8dfec8db9f404d1efd5a7866be27498be06b215b2368fa9b12a5d37a03e2c830

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