Malicious PDF — malware analysis report

Static analysis result for SHA-256 377e4ad489efb298…

MALICIOUS

PDF

76.4 KB Created: 2021-04-03 09:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: d25f341dcfee5102780151279f8d258c SHA-1: 1e42f3ed39748bc9130621c4a6b6c37e4507f0a6 SHA-256: 377e4ad489efb2987af1d27c8a9ab79ccd9d06a635039460abddb2780efb5154
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs pointing to disposable domains, suggesting a link farm or phishing lure. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript, and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests a malicious purpose related to link manipulation or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 http://potawuzaj.medianewsonline.com/worizobomiximasu.pdf In PDF document text
    • http://gugibugud.mygamesonline.org/z390_aorus_master_manual.pdfIn PDF document text
    • http://fortuneocredit.com/wuwuzor5tr3x.pdfIn PDF document text
    • https://cdn.sqhk.co/libodinidep/XAnhdjU/minecraft_ben_10_omnitrix_mod_download_pc.pdfIn PDF document text
    • http://tronreserve.online/3251825145722d8t.pdfIn PDF document text
    • https://cdn.sqhk.co/gupidiroka/DhejfI3/87964757440.pdfIn PDF document text
    • http://taxevidel.medianewsonline.com/bokawadilatusu.pdfIn PDF document text
    • http://wide-do.top/98633744423rht2m.pdfIn PDF document text
    • https://cdn.sqhk.co/pewesopefim/yskijjh/14156543962.pdfIn PDF document text
    • https://cdn.sqhk.co/wosipuvetot/cygf0hj/snake_io_game_download_apkpure.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406466/normal_601cfbf439911.pdfIn PDF document text
    • http://vzruvayarttraff.xyz/10th_social_science_xavier_guide_free_download10fkj.pdfIn PDF document text
    • https://cdn.sqhk.co/bapulofuw/t4jftq1/duck_hunting_game_online_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nizivatitogu/6gie7ja/zegudamifumamidaziwuga.pdfIn PDF document text
    • https://cdn.sqhk.co/bogulevim/avjahhb/catia_cnc_programming_tutorial.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496378/normal_60275837e4ead.pdfIn PDF document text
    • https://cdn.sqhk.co/dilijenaka/j1iaa8K/codycross_answers_group_238_puzzle_2.pdfIn PDF document text
    • http://hookup755.fun/cru_restaurant_newport_riprhdz.pdfIn PDF document text
    • http://mazipuvaxa.mywebcommunity.org/induction_motor_control_design.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a5fcdc5-8f4a-4038-b925-4c20dbffe1c6/stand_up_and_be_counted_meaning_in_tamil.pdfIn PDF document text
    • http://lugimeviguv.myartsonline.com/kisudafivipiniminuzeme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0b6ce67-73b9-428e-9a12-5eb999c6255d/59924495138.pdfIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/WboozbXZlIE/wb?keyword=regulations%20like%20the%20general%20data%20protection%20regulation%20PDF link annotation
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA5C 5620 bytes
SHA-256: 3f43755af67bc640bda8befcf47076d8ad566413a569deaad174e33cd341083c
font_01_sfnt_off0000fd95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD95 11092 bytes
SHA-256: 9628bd19e7d9fc5a47d9e0ca51a6c64ed6fb61f39842b19e8880184ee65a5011

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