Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a0f2c168ba17d6d…

MALICIOUS

PDF

49.6 KB Created: 2021-04-05 13:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: b0c3875cd9c93d18ef57b04c36deb9f3 SHA-1: b7b6b1760b52816c9e879a39f4fcc1f75e9c35cd SHA-256: 6a0f2c168ba17d6dc1feef1b89639569ae5bceeb58f83bd4194c731c325b6318
184 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 0.6386

Heuristics 5

  • 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
  • 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://fokemale.ru/strik?utm_term=modern+physics+mcq+questions+and+answers+pdf PDF link annotation
    • http://strita.space/xamumasupapemc4052.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455179/normal_60433bba70178.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448724/normal_603a429a92911.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464707/normal_604b957f89ada.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464995/normal_5fde58c44113c.pdfIn PDF document text
    • http://kzrovk.xyz/55593872921yev6l.pdfIn PDF document text
    • http://tells.fun/mabuwezonaxisufovumipluy6l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461229/normal_5fe15de2beeeb.pdfIn PDF document text
    • http://milesnires.xyz/35603561054rqct1.pdfIn PDF document text
    • http://fb-ig-copyright.com/craft_essence_guide416ai.pdfIn PDF document text
    • https://c7fb3737-a2fb-4e06-b71d-f78b648bb0a4.filesusr.com/ugd/a9248e_cc5bfc578d0d4dcd90bfb4d5c0c9f9db.pdf?index=trueIn PDF document text
    • https://ba30dffa-51fe-4caa-9472-6f142403a9bb.filesusr.com/ugd/c2007e_ba0b1f55ae18487da6a555d2b751b595.pdf?index=trueIn PDF document text
    • https://ddb0fe67-a09a-413d-b59a-c21b1dde3186.filesusr.com/ugd/3f0e57_816edec50fe04cdca85d7007959b5bc1.pdf?index=trueIn PDF document text
    • http://pesafitibum.epizy.com/epidemiology_biostatistics_and_preventive_medicine_free_download.pdfIn PDF document text
    • http://bivuraxut.rf.gd/thyristor_firing_circuit.pdfIn PDF document text
    • https://71b4061d-0fbe-47a8-a671-08758978b022.filesusr.com/ugd/0216f2_a3ea6051ae3840b1ae5fb6bd20582088.pdf?index=trueIn PDF document text
    • http://pebitezilewabe.rf.gd/ravipakekokedikilelef.pdfIn PDF document text
    • http://supovopekowo.epizy.com/texte_bourgeois_gentilhomme.pdfIn PDF document text
    • http://kibaseril.rf.gd/giulio_carlo_argan_arte_moderna_download.pdfIn PDF document text
    • https://6c8027e1-9878-41b3-a9ef-32ba2b6bcd02.filesusr.com/ugd/185811_3d90414d2d844cf3aca59558d3efc5f7.pdf?index=trueIn PDF document text
    • https://fb79ad55-22b5-4823-9538-35c71bbbd514.filesusr.com/ugd/ea423f_30f9e43ef257451c8e285fc1e1700b46.pdf?index=trueIn PDF document text
    • http://madepubas.epizy.com/gogaluxulakusi.pdfIn PDF document text
    • https://f6142301-0c02-44dd-b2c5-62cf9b3cd0dc.filesusr.com/ugd/ebfdba_ca3e037193894c4ab06b7c2d2304bcd9.pdf?index=trueIn PDF document text
    • https://f43304fd-85e4-489a-8612-81977e01be4a.filesusr.com/ugd/b6f504_dc49c50d2c21408fa8398dd6387cbd05.pdf?index=trueIn PDF document text

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