Malicious PDF — malware analysis report

Static analysis result for SHA-256 029b17c6d252d39d…

MALICIOUS

PDF

137.3 KB Created: 2021-06-10 00:33:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e05402d9d2c6b0051365021c6d76e891 SHA-1: 2b0a1976672c98bfc306cf34839106178294a6a1 SHA-256: 029b17c6d252d39da4c721adf7a2c02577e6fe02f68a083c2658f1c708b81725
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution via these links. No scripts were extracted, but the structure and URL patterns are consistent with a malicious PDF designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9389

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://philabc.ru/pbw?utm_term=the+canterbury+tales+prologue+questions+and+answers+pdf PDF link annotation
    • https://senuwisaf.weebly.com/uploads/1/3/4/0/134018119/bbe21c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421629/normal_5fe03be39831a.pdfIn PDF document text
    • https://vakuvovigoder.weebly.com/uploads/1/3/4/4/134467198/a1490e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422628/normal_603a281191b8c.pdfIn PDF document text
    • https://tiputanamadavok.weebly.com/uploads/1/3/5/3/135314880/cbd32bb60bb250.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370264/normal_600cde242acc3.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/wizelel_vuwom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449600/normal_5ff67016ce32c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402289/normal_603378cacd48c.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4380078/normal_60affaf2eeef3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418970/normal_6012a297e0fd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444370/normal_6024ce5446fb3.pdfIn PDF document text
    • https://metozalolak.weebly.com/uploads/1/3/4/6/134610510/7d0b0a1a22.pdfIn PDF document text
    • https://tujakiko.weebly.com/uploads/1/3/0/8/130814553/dajot_divijorebuxenum_kominemotulok_vojix.pdfIn PDF document text
    • https://timowerudep.weebly.com/uploads/1/3/0/7/130738780/1556205.pdfIn PDF document text
    • https://feverawujebuv.weebly.com/uploads/1/3/5/3/135314909/7771398.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471995/normal_5fddb46170ca8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464541/normal_5fcf1b0b37b1b.pdfIn PDF document text
    • https://seligelota.weebly.com/uploads/1/3/1/4/131453084/tajavapug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457876/normal_6051868bb2eb0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vajaxasave.pbworks.com/w/file/fetch/144452568/the_passionate_shepherd_to_his_love_shmoop.pdfIn PDF document text
    • http://fokopaviwu.pbworks.com/w/file/fetch/144724041/dividir_por_una_cifra_ejercicios.pdfIn PDF document text
    • http://febokipup.pbworks.com/f/30594358760.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001f1d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F1D7 5828 bytes
SHA-256: ce49a70e88db5ecd7c47f38427c005a1596d8c27a00d41af9407f8aa7b42b4f5
font_01_sfnt_off000205b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x205B0 10788 bytes
SHA-256: d797c6cb1dbee7ad1a6989cb83617cd1dd87293dee970f787c0af9086975122a

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