Malicious PDF — malware analysis report

Static analysis result for SHA-256 45b7e60ee855852d…

MALICIOUS

PDF

133.8 KB Created: 2021-02-19 20:23:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7cad6b52f965ddaf5c5f2ddadcc2a772 SHA-1: 7034ad50545abdd1c8ac74d4b851d285be651c61 SHA-256: 45b7e60ee855852d11dc9ed2e494e5db9df396c2adade04b758533e250907d93
186 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm used for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to 'parts diagram' to encourage clicks on these malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/strik?utm_term=2012+cub+cadet+ltx1040+parts+diagram PDF link annotation
    • https://demuxovepeb.weebly.com/uploads/1/3/4/3/134311881/6475bbc.pdfIn PDF document text
    • http://luxshop21.site/kukavp78oa.pdfIn PDF document text
    • https://laziboxejebemu.weebly.com/uploads/1/3/0/7/130740401/5790717.pdfIn PDF document text
    • https://mitumeme.weebly.com/uploads/1/3/4/8/134879381/batekimid.pdfIn PDF document text
    • http://teplotronic.ru/abc_learning_coloring_pages3fc0f.pdfIn PDF document text
    • https://bigonukoduxa.weebly.com/uploads/1/3/2/7/132741189/4540966.pdfIn PDF document text
    • https://xuzumuja.weebly.com/uploads/1/3/1/6/131636792/tiramegijiluw-nabutireguner.pdfIn PDF document text
    • https://cdn.sqhk.co/zebenane/bxghPKD/67666645716.pdfIn PDF document text
    • https://bemetezebore.weebly.com/uploads/1/3/4/8/134882820/murejo.pdfIn PDF document text
    • https://cdn.sqhk.co/tinulafi/khbicnw/mowepokanevefovimewi.pdfIn PDF document text
    • https://seruvexude.weebly.com/uploads/1/3/4/4/134404645/razaguresof.pdfIn PDF document text
    • https://gererojakomez.weebly.com/uploads/1/3/1/1/131163960/tadojodagi-pelamusonan.pdfIn PDF document text
    • https://cdn.sqhk.co/vidujubotaf/RiEhcia/sugar_skull_wallpaper_for_your_phone.pdfIn PDF document text
    • https://didegesub.weebly.com/uploads/1/3/2/6/132681352/2c65640beb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410191/normal_6022f88269fca.pdfIn PDF document text
    • https://serarabasujuz.weebly.com/uploads/1/3/1/6/131606617/2908991.pdfIn PDF document text
    • https://cdn.sqhk.co/sinewuvemomi/jbijqhh/fake_caller_id_online_free.pdfIn PDF document text
    • http://natfreshik.fun/counting_philippine_money_worksheetsogb8l.pdfIn PDF document text
    • https://cdn.sqhk.co/famuxina/jboAjhg/48079905852.pdfIn PDF document text
    • https://tusululobiwivet.weebly.com/uploads/1/3/1/1/131163859/95589d0ade6f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0001c906.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C906 5920 bytes
SHA-256: 18b5414162e5882fa76e4029ad2bd129fbfb97d5cd7bcafbb8667f3d6b9fe170
font_01_sfnt_off0001dd1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DD1E 12772 bytes
SHA-256: cf472550022dab4fa3999fe308a57becd777efcc9e3b6f789bbcddac23dd8e0b

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