Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d201e8cbc958b10…

MALICIOUS

PDF

78.6 KB Created: 2021-02-20 12:21:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b6d03a16b1a8ce78b31c1ba8abbbb8e5 SHA-1: 89a9bfb53125ad0d75f8d0a93f0ceb3d5a9023a1 SHA-256: 6d201e8cbc958b10382ca0a2fc98aef05bed82a6cd42ddb76e86424fdefdc50a
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with one specifically identified as a link farm hosted on disposable infrastructure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using small PDFs as link farms on disposable hosting, suggesting a phishing or malicious redirection attempt. The ML classifier and ClamAV detection further support its malicious nature, likely serving as a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=ffxiv+castrum+meridianum+guide PDF link annotation
    • http://meetchambre.xyz/mittlere_nderungsrate_differenzenquotient_formels2anm.pdfIn PDF document text
    • https://cdn.sqhk.co/dakubakasilu/ghijew5/elite_hockey_camps_vancouver.pdfIn PDF document text
    • http://aires.fun/penubugqn4i0.pdfIn PDF document text
    • http://study-english-04.space/53982253527htoa6.pdfIn PDF document text
    • http://damodudajipofem.22web.org/puxuwamebebufiguwajake.pdfIn PDF document text
    • http://jilet1.club/pazamofkrxnv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414680/normal_5fc8561c34ea1.pdfIn PDF document text
    • https://cdn.sqhk.co/ritafase/hhfxahf/dunokep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387218/normal_6005806370196.pdfIn PDF document text
    • https://cdn.sqhk.co/bafesugoguwi/hGhjV1o/37362404252.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/gorajikunobixi/1778492362.pdfIn PDF document text
    • http://zunebodiz.epizy.com/28769009392.pdfIn PDF document text
    • http://wusekugu.rf.gd/split_merge_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/60633979447.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e96d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE96D 5164 bytes
SHA-256: 778f8cbfb2d39eca7c0472509ac4370a728bd5845133375eb79c9cc1fe04b94a
font_01_sfnt_off0000faec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEC 10648 bytes
SHA-256: 0270931f960c25ab7cedff5435b2acfe8ce299facc27faaee7e53067e86627fb
font_02_sfnt_off00011edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EDF 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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