Malicious PDF — malware analysis report

Static analysis result for SHA-256 b57bd183f23114a1…

MALICIOUS

PDF

75.0 KB Created: 2021-03-04 21:53:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: c30a0752bb7675a376fb38fa43c44255 SHA-1: 18a25e13c7173283316cb4e327586c1570dc21ef SHA-256: b57bd183f23114a1f5580de8314e38b9eb618d98d0dac769b75eaa27d84263e0
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a suspicious domain, masquerading as a search result. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://vilenefex.ru/wb?keyword=how%20to%20make%20a%20flower%20arrangement%20in%20a%20tall%20vase PDF link annotation
    • http://basumoxivor.sportsontheweb.net/spice_and_wolf_anime_episodes.pdfIn PDF document text
    • http://suzamajotibe.mywebcommunity.org/les_miserables_musical_streaming_free.pdfIn PDF document text
    • http://pazifelurup.medianewsonline.com/safety_examples_at_home.pdfIn PDF document text
    • http://warixedivukinat.mygamesonline.org/how_do_i_reset_my_samsung_tablet_to_factory_settings_without_password.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/hhbhcQC/luno_bitcoin_wallet_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/somujatiza/4jhgfBx/xijewovisuxaxafasuso.pdfIn PDF document text
    • https://cdn.sqhk.co/lewikokezina/Dxhnicm/45455752656.pdfIn PDF document text
    • http://jefevivavifax.scienceontheweb.net/how_to_make_climate_diagram.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/denokorinimobokoladagax.pdfIn PDF document text
    • https://cdn.sqhk.co/vapatibu/jcOib3s/24748493856.pdfIn PDF document text
    • http://tufodudem.mypressonline.com/45542820868.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://s3.amazonaws.com/kezemiradigu/cg_song_video_hd9_com.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7823ccc7-74e7-4a0d-acd1-bb9390fc9ea2/dejazode.pdfIn PDF document text
    • http://pimoxonevuwewax.atwebpages.com/char_griller_smoker_manual.pdfIn PDF document text
    • http://faleferesevo.onlinewebshop.net/44398845458.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/tl2_synergies_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a66b1132-691d-4bd7-ba24-b920236eb66c/brother_hl_2240_toner_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54e73707-b19d-4c9d-b48c-5cf8f8cb96f9/14356782290.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b54b685-d2ba-402b-9306-1949a8f20697/89833680736.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0152317b-b2e2-45ce-b512-af525cb15728/ac_joint_dislocation_physiotherapy_exercises.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3521ef9-8244-47f9-8160-1ef2b49d992f/dungeons_and_dragons_online_game_master.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b736e37-1b1d-4399-bc48-8bee85aa36da/7487781531.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/73247197718.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/weather_report_for_calmar_alberta.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/business_powerpoint_presentation_template_free.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F3 5052 bytes
SHA-256: d7afd9d75a404822bcfe3a2cdfd32630a18bc7ffb6a8059389c840c01d64f379
font_01_sfnt_off0000e41a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE41A 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off0000ef7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7D 9240 bytes
SHA-256: 5eef1d5f0391c85ad61e4ba12e063073f391753cdade4c6503487c81933a8ec7
font_03_sfnt_off00010efd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EFD 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.