Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c1327d08106e61…

MALICIOUS

PDF

76.3 KB Created: 2021-01-14 12:14:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 800988f7093a75717ad518006177fcb9 SHA-1: 90fecf335505d6729fbc19eec3dae1ee7d65d31c SHA-256: e9c1327d08106e61f53727348682d322e693d74d0af0a43f4802d62584a52121
134 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains embedded URLs, including one pointing to 'trafffi.ru', which is likely part of a phishing or malware distribution scheme. The heuristic 'SE_INVOICE_LURE' suggests the document attempts to deceive users with fake invoice or payment-related content to encourage interaction with the malicious links.

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 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://trafffi.ru/aws?utm_term=straight+bill+of+lading+template+canada PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4480753/normal_5fcb086eebd85.pdfIn PDF document text
    • https://nusokusin.weebly.com/uploads/1/3/4/3/134350978/gadewupupalujufut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495246/normal_5fcd25f4134e9.pdfIn PDF document text
    • https://rudarizegofuk.weebly.com/uploads/1/3/4/3/134355262/puzuk_wowopifukofo.pdfIn PDF document text
    • https://site-1177630.mozfiles.com/files/1177630/toca_boca_mystery_house_fridge.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382196/normal_5fe2148105889.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472188/normal_5fb864f6dbec1.pdfIn PDF document text
    • https://cdn.sqhk.co/pemanunid/mtgcZhj/kubiwemelovozobiwo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463807/normal_5ff429c46fe24.pdfIn PDF document text
    • https://site-1180855.mozfiles.com/files/1180855/ruzuxipilubini.pdfIn PDF document text
    • https://cdn.sqhk.co/tokititagiwe/iablhgD/primary_games_monkey_go_happy_cabin_escape.pdfIn PDF document text
    • https://vasoderavir.weebly.com/uploads/1/3/4/7/134728489/bajif-lifegovoga-tevazonixiri-tosek.pdfIn PDF document text
    • https://vidajubobulixi.weebly.com/uploads/1/3/4/6/134650234/2fa427cd42f3a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414156/normal_5f964c1866120.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/hgohhif/skins_for_roblox_without_robux_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408721/normal_5fb6ba378281c.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
    • 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_off0000e09b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE09B 5420 bytes
SHA-256: 94aea9ed3d3598bf67225c2d59fc88018baa1566d62eefb6cc29ea4c5a5c2174
font_01_sfnt_off0000f2cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CD 10304 bytes
SHA-256: e2df3f17afa6fafafe4bbed60c9f97b69f7fb41a7e7bb7b9b3aee41fe1fe8608
font_02_sfnt_off0001161d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1161D 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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