Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcf1e34d47ddc218…

MALICIOUS

PDF

50.6 KB Created: 2021-03-15 21:19:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a2c9b05c07561552d20224695ab58f0f SHA-1: 1a47a0cf5559164eac17a909fcad751041297930 SHA-256: dcf1e34d47ddc218463a606f5111aa3d30fde29877901489131697f66248fe50
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8343

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xezojetit.ru/aws?utm_term=qu%25C3%25ADmica+org%25C3%25A1nica+pdf+libro PDF link annotation
    • http://medgaj.com/cmos_analog_circuit_design_tutorial0cmlz.pdfIn PDF document text
    • https://cdn.sqhk.co/nixivezez/hJ6tNPc/19758856894.pdfIn PDF document text
    • http://portkamesto.site/dexeresafipajigafazea2k5m.pdfIn PDF document text
    • http://vashastrahovka24.ru/117406949985f8p2.pdfIn PDF document text
    • http://joretuvivofip.22web.org/jumutivazekamuneka.pdfIn PDF document text
    • http://it50save.info/hp_photosmart_7510_printer_reviews1k1i7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378620/normal_5fd2d108df197.pdfIn PDF document text
    • http://mazafaka69pussy.online/shanta_bai_song_ringtone_freeepvq7.pdfIn PDF document text
    • http://hdvideo.design/71314067977po7ki.pdfIn PDF document text
    • http://copyrightprivacy.site/ayurveda_mcq_bookselj2r.pdfIn PDF document text
    • http://how2clever.com/sekorekoberenapam6jc93.pdfIn PDF document text
    • https://cdn.sqhk.co/niserutom/gnEWmpN/brawl_maker_for_brawl_stars_indir.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487197/normal_5fefcd8b19668.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502511/normal_5fd85e4a628cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414848/normal_5fd386e41e89c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471083/normal_6022927d2f54f.pdfIn PDF document text
    • http://kojajopi.epizy.com/bagutad.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/35074410139.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/62253136754.pdfIn PDF document text
    • http://bamalupit.rf.gd/what_junk_foods_are_gluten_free.pdfIn PDF document text
    • http://kotidaw.epizy.com/77613002092.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/54789072466.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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