Malicious PDF — malware analysis report

Static analysis result for SHA-256 65760204d595a572…

MALICIOUS

PDF

81.3 KB Created: 2021-03-31 06:25:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 30c51f91cb36e21208f90161091c0a54 SHA-1: 4e49573fab56e5fa7efa5a79d6fc8cd9d63f5b9b SHA-256: 65760204d595a572731e447c29979b0a59bc4d9e095ec05bd344753e97ec0b65
134 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'business plan template', and an embedded URI points to a suspicious domain 'midufefew.ru' which is likely part of a phishing or malware distribution scheme. The presence of numerous unknown URLs further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://midufefew.ru/award?keyword=business+plan+template+pdf+2020 PDF link annotation
    • http://moneyindia.site/27014165704r2jmq.pdfIn PDF document text
    • http://ashotik.space/borderline_mother_4_types5je5r.pdfIn PDF document text
    • http://javefuxola.getenjoyment.net/treble_and_bass_clef_notes.pdfIn PDF document text
    • http://pepariravifaza.getenjoyment.net/sholawat_wahidiyah.pdfIn PDF document text
    • http://wivevadevenumet.mywebcommunity.org/50198824336.pdfIn PDF document text
    • http://insta-sale.site/xonix_game_online_free_playq4w9j.pdfIn PDF document text
    • http://gojavodevagajuw.mygamesonline.org/service_engine_soon_light_blinking_nissan_altima.pdfIn PDF document text
    • http://about-fb-support.com/a_first_course_in_database_systems_3rd_edition8gizv.pdfIn PDF document text
    • http://prodive.su/345787884048haz0.pdfIn PDF document text
    • http://azorocheat5.xyz/30-day_indian_keto_recipesfj1zq.pdfIn PDF document text
    • http://zukirudon.mypressonline.com/that_evening_sun_go_down_william_faulkner.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2315ab0c-75b7-48b3-9ff7-6ebd3c46bbc7/introduction_to_forensic_anthropology_byers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aebe888-7705-4cdc-a2e6-84a3f1bfb746/triumph_bonneville_service_manual_free.pdfIn PDF document text
    • http://disoluje.myartsonline.com/9493599992.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbcd6c97-cf15-4925-a2bc-61c6710b7e59/fezuzepenuxesinomipiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e79ea517-6e2e-40a2-8f4b-16c2ce8a6185/25437986722.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/662297f0-4f46-425f-bcaa-6478b34e0c80/72665389829.pdfIn PDF document text
    • http://bitujiduruv.myartsonline.com/adobe_illustrator_cc_2020_shortcut_keys.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/577d172d-20b9-4a47-9245-bd9c779bae69/how_to_make_keto_beef_jerky_in_dehydrator.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CE 5184 bytes
SHA-256: 0779a61cfe67cb490e31d578f21efb22a4a5502f76fbe706cc70dc312c52260a
font_01_sfnt_off00010455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10455 10904 bytes
SHA-256: c978a6fff7c276a9b11d50cd521e3e0044a5a7d3fa34bd14e222250971fbd4e4
font_02_sfnt_off000129b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129B8 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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