Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d0fd55900199014…

MALICIOUS

PDF

78.0 KB Created: 2021-01-17 20:59:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1ea7a6f7fdf027f2566d7124c76a25f3 SHA-1: e8cd4636e79151c040176acd3837ff1dcaf7bb40 SHA-256: 7d0fd55900199014fee26a08a1b1667c0d731359992ff2a9d348863b242f4b31
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO poisoning tactic to direct users to malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafficel.ru/wb?keyword=cat%20popping%20noise%20when%20breathing PDF link annotation
    • https://rajizoru.weebly.com/uploads/1/3/1/8/131856770/suviwufexev-nalabul-wotudufofofa-veneba.pdfIn PDF document text
    • https://rotedovifiwi.weebly.com/uploads/1/3/4/8/134846651/xaxixuwokop.pdfIn PDF document text
    • http://fanogizakelime.iblogger.org/27646142419.pdfIn PDF document text
    • https://vizojifura.weebly.com/uploads/1/3/1/0/131070272/momemuva-wumuritamufaba.pdfIn PDF document text
    • https://xemupawiked.weebly.com/uploads/1/3/4/3/134321325/964fc919ae4c.pdfIn PDF document text
    • https://cdn.sqhk.co/puwukuwos/ejjjdjf/93894937860.pdfIn PDF document text
    • https://wufikaxom.weebly.com/uploads/1/3/4/8/134883002/4926383.pdfIn PDF document text
    • https://benaputilog.weebly.com/uploads/1/3/4/7/134707665/d6a0d79c.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefimex/yAjbvha/kajojirexe.pdfIn PDF document text
    • https://ledapenilodaro.weebly.com/uploads/1/3/1/0/131070651/8293306.pdfIn PDF document text
    • https://surejijal.weebly.com/uploads/1/3/4/5/134525532/mofosepasik_josajawamunelo_mapitokex_ralip.pdfIn PDF document text
    • https://widubemevojapo.weebly.com/uploads/1/3/4/3/134320166/lavas-lufojiw-jarefituri-xapugomojizexu.pdfIn PDF document text
    • https://tugajepefur.weebly.com/uploads/1/3/1/4/131453805/2860881.pdfIn PDF document text
    • https://pofomagod.weebly.com/uploads/1/3/1/4/131483550/1610869.pdfIn PDF document text
    • https://cdn.sqhk.co/gafisasiwu/jgiVVlO/tidibogimubefozivukes.pdfIn PDF document text
    • https://cdn.sqhk.co/lilanoto/ij9iijc/kimi_no_nawa_meteor_live_wallpaper.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xawabaxazulaga.epizy.com/vande_mataram_dj_song_original.pdfIn PDF document text
    • http://medevigad.epizy.com/fha_guidelines_on_collections.pdfIn PDF document text
    • http://lojosikol.epizy.com/nesiripepasov.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_off0000f29e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF29E 5184 bytes
SHA-256: 59d249d3bf0aa7b112c681fd603e9f9923949a9034538f12edf37576eca8bda1
font_01_sfnt_off00010447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10447 10676 bytes
SHA-256: b56bedd14db3af164da2f971dd3400110a48785e6769c88f64416b062cdec45c

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