Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4a8555b8e796782…

MALICIOUS

PDF

93.2 KB Created: 2021-03-25 09:17:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8bfbc96253c4f38b89dd2ae3066f5ed9 SHA-1: d1744feefbbeb87903c5f7bb73b3162398a0eea5 SHA-256: d4a8555b8e796782633a4fcdcc0351917873c0e2be858ca8f5960302162240d9
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and is flagged by ClamAV as a phishing trojan. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves directing users to external sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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
  • 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://seumenha.ru/wix?keyword=innamorati+nella+commedia+dell%2527arte PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465396/normal_6015111a72a27.pdfIn PDF document text
    • https://cdn.sqhk.co/jutalufelex/VjegCgg/77304488002.pdfIn PDF document text
    • http://nusixogej.iblogger.org/pevekewovabozova.pdfIn PDF document text
    • http://magexaxajatadog.getenjoyment.net/93142479014.pdfIn PDF document text
    • https://cdn.sqhk.co/nujidegowupi/YBxYhdK/xabeladazifunap.pdfIn PDF document text
    • http://help-igcopyright.xyz/92013950720q4qyo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413986/normal_5fcdd9e3a4723.pdfIn PDF document text
    • https://cdn.sqhk.co/dinigivo/lM5Bbgf/past_future_punjabi_song_mp3_download_djpunjab.pdfIn PDF document text
    • http://skidki-day.shop/police_car_coloring_pages_online2mj57.pdfIn PDF document text
    • http://paktum.pro/80144220631e5cyq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482191/normal_5fd93a5a201e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376086/normal_60108d4a50442.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/cjdSjhz/chhaliya_song_320kbps.pdfIn PDF document text
    • http://csxmoney.info/2559311657965nnn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371799/normal_60246d60152c2.pdfIn PDF document text
    • http://hesap-al-sat.com/glute_strengthening_exercises_for_runners8loal.pdfIn PDF document text
    • http://nokuxitajorox.22web.org/ny_times_crossword_answers_9_13_19.pdfIn PDF document text
    • http://nekuwagibajese.getenjoyment.net/singular_and_plural_nouns_list.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xulaxun.rf.gd/zabaso.pdfIn PDF document text
    • http://nakosaf.rf.gd/what_toppings_go_with_white_sauce_pizza.pdfIn PDF document text
    • https://676a7a22-5bec-432e-92e0-9d4a0a27851c.filesusr.com/ugd/a1fb72_7b5012fa5e914d27893395d54e7c8b4b.pdf?index=trueIn PDF document text
    • https://d4f4546a-a836-4b3d-8651-c56b89608eca.filesusr.com/ugd/3e9e83_f57bc4c9c52f4fe48df8db1a186a8047.pdf?index=trueIn PDF document text
    • https://113c517c-d7b0-4b36-99d7-6722bcb7ef36.filesusr.com/ugd/8e66a5_99bad02d24c54a4f94c27c2daa70faac.pdf?index=trueIn PDF document text
    • https://8ecf7690-1f99-4e28-a4b6-3228ba9731d7.filesusr.com/ugd/63d3ad_7084719fee9d4065a948feaef08325c0.pdf?index=trueIn 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_off00012270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12270 3200 bytes
SHA-256: 0a01c636505c5cdfb6e7a18c9088e1e7ef7da71c99f6594b7ceae21f76c81c14
font_01_sfnt_off00012dc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DC5 4876 bytes
SHA-256: 488bad7a2a30b0c2dc5abb3a5cc6a390e1bcb89ee27bb408aee4e39e2a806b40
font_02_sfnt_off00013e46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E46 12056 bytes
SHA-256: 77e6f3919bd02a42b412612246da870a3cba61acaf2e4a4894023865d001cfe9