Malicious PDF — malware analysis report

Static analysis result for SHA-256 9abca34ccbb10c59…

MALICIOUS

PDF

78.2 KB Created: 2021-02-20 16:02:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 09641e5aa7264cf429da69b1d5068cee SHA-1: e30cce81e633dbc89147b0316430c74fe20d4779 SHA-256: 9abca34ccbb10c59d6f0bdaf97b213b10d8133675131f4a653fca8a9ca6e8ac2
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The sample is a PDF document flagged by multiple heuristics as malicious, including brand impersonation for credential phishing (Amazon) and ML classification. It contains numerous embedded URLs, many of which point to disposable hosting or redirectors, suggesting a phishing or malware distribution campaign. The presence of external URIs and the phishing lure indicate an attempt to trick the user into navigating to a malicious site, likely for credential harvesting or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://memefuzagimo.weebly.com/uploads/1/3/4/6/134612336/1728238.pdf.
  • 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://baarspo.ru/123?utm_term=why+isn%2527t+my+mobile+hotspot+working+straight+talk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411919/normal_601d2a6b9d49c.pdfIn PDF document text
    • http://umdtheatre.ru/sideways_arithmetic_from_wayside_schc59gn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370541/normal_5fe4510a64760.pdfIn PDF document text
    • https://memefuzagimo.weebly.com/uploads/1/3/4/6/134612336/1728238.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501962/normal_600f9fa0f3f84.pdfIn PDF document text
    • https://mabalavorejeg.weebly.com/uploads/1/3/4/7/134769590/6535332.pdfIn PDF document text
    • http://zesamoa.online/bufogipitifekidofebtkh8u.pdfIn PDF document text
    • https://batebabegusuk.weebly.com/uploads/1/3/1/4/131437625/1326306.pdfIn PDF document text
    • http://idclick.cash/68442726237my3yt.pdfIn PDF document text
    • http://wejnpowk.space/44760186951j97ea.pdfIn PDF document text
    • http://konufij.22web.org/tabel_99_asmaul_husna_beserta_artinya.pdfIn PDF document text
    • https://gumakini.weebly.com/uploads/1/3/1/4/131414358/juvutopekar-pasuve-suviwema.pdfIn PDF document text
    • http://samaraexpo.com/85035550191atelu.pdfIn PDF document text
    • http://masonufidowex.iblogger.org/98717707217.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://silapopo.epizy.com/simavomuromek.pdfIn PDF document text
    • http://pezusor.epizy.com/nejikulafakolafu.pdfIn PDF document text
    • http://ximitexus.epizy.com/xokexuroratesabulewuvena.pdfIn PDF document text
    • http://wadedizori.epizy.com/miniclip_game_bubble_trouble.pdfIn PDF document text
    • http://linexiziretewoj.rf.gd/56182644270.pdfIn PDF document text
    • http://retipike.rf.gd/calculator_photo_vault_apk_mod.pdfIn PDF document text
    • http://sosozodazu.epizy.com/86654988335.pdfIn PDF document text
    • http://tebubejusudigu.rf.gd/free_games_chess_full_version.pdfIn PDF document text
    • http://tapejufujol.epizy.com/vodib.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_off0000f149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF149 5676 bytes
SHA-256: 7113b91f8498844d2ae8abbe0819de8e00df0b23096b36f3660e80ee55fd98a0
font_01_sfnt_off00010494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10494 11232 bytes
SHA-256: ccb8ed556833f99c4d5066ae23e5acc64f17084a2e461531754c8489aeec66ef

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