Malicious PDF — malware analysis report

Static analysis result for SHA-256 006dc2b3fb6cbef7…

MALICIOUS

PDF

74.7 KB Created: 2021-02-19 19:45:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: fe1572afe412c2202ee2844b62c1e2b6 SHA-1: 5d776ba96c04be2501175e009933c5e9a88be21a SHA-256: 006dc2b3fb6cbef7657741dffb924bd09789597535a65ea9f1b102774f9e1a9d
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, specifically identified as a phishing trojan by ClamAV. It contains a large number of external links pointing to disposable domains, indicating a link farm or SEO abuse tactic. While no scripts were explicitly extracted, the PDF structure and the nature of the links suggest it's designed to redirect users to potentially malicious content or phishing sites, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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://leonvi.ru/wb?keyword=romeo%20and%20juliet%20globe%20theatre%20actors PDF link annotation
    • http://avto-trokot.xyz/dovuzudoxavuribifavalsp0sb.pdfIn PDF document text
    • http://gratoramaa.website/merge_and_word_filesfd6rq.pdfIn PDF document text
    • http://urologo.store/ap_style_comma_after_month_and_dayyhndm.pdfIn PDF document text
    • https://lolorude.weebly.com/uploads/1/3/0/7/130775760/1299842.pdfIn PDF document text
    • https://wisadokuresagor.weebly.com/uploads/1/3/1/4/131436967/kobatafopoma.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414166/normal_5fcefa8726725.pdfIn PDF document text
    • http://postel-na-zakaz.ru/kowurixebi2c8pp.pdfIn PDF document text
    • http://peludofnor.fun/hack_roblox_counter_bloxm6rwo.pdfIn PDF document text
    • https://danodukuwen.weebly.com/uploads/1/3/1/6/131637043/c89eb6b.pdfIn PDF document text
    • http://lojasamericanasbr.com/fugewexe79o21.pdfIn PDF document text
    • https://fejejupusojovif.weebly.com/uploads/1/3/1/4/131483068/xalijew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497368/normal_5fc9d5f40008e.pdfIn PDF document text
    • https://tuzafezinaxav.weebly.com/uploads/1/3/4/3/134319976/riwoj_revolinigopim.pdfIn PDF document text
    • http://vknacruckalaikov123.xyz/blue_dye_source_crossword_answerbs8tj.pdfIn PDF document text
    • https://zujizivuzilinum.weebly.com/uploads/1/3/5/3/135344014/3cf9f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369514/normal_5fec8aa1206be.pdfIn PDF document text
    • https://vazozedirasamib.weebly.com/uploads/1/3/4/0/134013018/ginewajotivow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444850/normal_5fe904c6cc59d.pdfIn PDF document text
    • http://daimontimur.org/how_much_is_epic_emrlvrwl.pdfIn PDF document text
    • http://usersdeviceprotectionservice.site/gramatica_ingles_completo_gratisdyakq.pdfIn PDF document text
    • https://lefafikof.weebly.com/uploads/1/3/0/9/130969708/xixowalokuwibamapa.pdfIn PDF document text
    • http://instofficial.online/netflix_stock_dropped_16_billionuw98x.pdfIn PDF document text
    • https://jipofaxinevafud.weebly.com/uploads/1/3/4/3/134350183/715fc157.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_off0000d92e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD92E 5460 bytes
SHA-256: faa691e9a4dd80b1eb57981486020984e0044fa7b16ef2ad14f628e892b79a86
font_01_sfnt_off0000eb8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8D 10380 bytes
SHA-256: b945767b2c3675e1673f9e46c8c3fad024627abf464bbb6b5cae0960fa964978
font_02_sfnt_off00010f14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F14 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f