Malicious PDF — malware analysis report

Static analysis result for SHA-256 d174ab2ced8221e9…

MALICIOUS

PDF

75.2 KB Created: 2021-04-06 12:53:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 146fdb4d9a7d1d90f05e60345f48c64d SHA-1: b01ceb54333001d8d8f5e8d55cc46da8a6bf33af SHA-256: d174ab2ced8221e9287098e5a9bcd57dc7c2bbeaa8a3412e322bee245a191db9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple heuristics indicating it is a link farm designed to redirect users to malicious sites, with one URL specifically mentioning onion harvesting. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the PDF structure and embedded URLs point towards a phishing or scam attempt, likely using a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://soxebez.ru/strik?utm_term=when+are+vidalia+onions+harvested PDF link annotation
    • http://mybestchan.online/75031564208ghm1p.pdfIn PDF document text
    • http://modernstyle.pro/raja_yoga_book_in_tamilcrqvw.pdfIn PDF document text
    • http://viwavorikag.22web.org/batman_the_long_halloween_animated_movie.pdfIn PDF document text
    • http://creamwalls.online/93516450461302ti.pdfIn PDF document text
    • http://puwuditufu.22web.org/tunoxumepofedavekusobe.pdfIn PDF document text
    • http://kawafopi.mygamesonline.org/how_to_open_a_pet_store_business.pdfIn PDF document text
    • http://thedopemarketing.com/kemuwefodufifaturexu18jj.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://doucheapp.xyz/list_of_hatchet_books_in_orderaa650.pdfIn PDF document text
    • http://santaparker.store/16403300888mskps.pdfIn PDF document text
    • http://rabemedexisubis.mygamesonline.org/wazodusenoxugeviv.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/58554041-7982-4eb2-a503-c3c9683c2712/icca_bar_course_fees.pdfIn PDF document text
    • http://vozuxekeve.rf.gd/28318103256.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5b8d307-2c94-4d0f-831f-a36c3ed87524/how_to_clean_lint_out_of_whirlpool_cabrio_dryer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ef22374-c5d0-4aba-a646-dc2094598441/deluzugatijatig.pdfIn PDF document text
    • https://8d67285a-e3c5-4820-bb1a-bb91ce1079a6.filesusr.com/ugd/d54300_60831e52964f42a9925f73e20511023a.pdf?index=trueIn PDF document text
    • https://729282ec-1290-4cbc-9302-cf8a24acd4c7.filesusr.com/ugd/42c189_88825f6c733846f69c83c34ff768ccba.pdf?index=trueIn PDF document text
    • http://xexewul.epizy.com/lawetusolaxawubex.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8EB 4984 bytes
SHA-256: d6bcd56fabbf3b60bbe5242f59f278bcaf4436d83af1793eea6028ec0664293a
font_01_sfnt_off0000f9e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E7 10644 bytes
SHA-256: ee839d5872b6a856d784860e06bd60ea4ab1b36361401bb125b203cd5eea3f2d

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