Malicious PDF — malware analysis report

Static analysis result for SHA-256 14e227f1b244d567…

MALICIOUS

PDF

72.4 KB Created: 2021-03-09 14:43:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 12654ca65a3975b08208b14a02ad8298 SHA-1: 2117d86732a3fa89850a6647b0f54574e49ca80b SHA-256: 14e227f1b244d567d797834a4ab54617e6ad245313293d59e8b667b976ba32f2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the presence of external links and the nature of the heuristics indicate a high likelihood of malicious intent, possibly involving the exploitation of PDF vulnerabilities or the redirection of users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://xajibur.ru/123?utm_term=sandy+hook+striped+bass+fishing+reports PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419849/normal_601c61a097a41.pdfIn PDF document text
    • https://piwutevuxave.weebly.com/uploads/1/3/4/8/134891910/jibatuzu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501810/normal_5fc725ba5dc7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428329/normal_6028fb6429a35.pdfIn PDF document text
    • https://nojemalof.weebly.com/uploads/1/3/0/8/130873850/xixigalukamiwi.pdfIn PDF document text
    • http://alkim.xyz/kivijupexudunabaxikomo0bipu.pdfIn PDF document text
    • http://microdigitalmeter.xyz/blood_of_elves_word_count8xz19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403421/normal_5fef96a424080.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488316/normal_601eca4e20417.pdfIn PDF document text
    • http://dress-russia.ru/sarurewuwulevurimeretonem7ouh.pdfIn PDF document text
    • http://summ-green.fun/tegawedufofifu6z6a7.pdfIn PDF document text
    • https://sawulazu.weebly.com/uploads/1/3/4/5/134588127/8126564.pdfIn PDF document text
    • https://bijejumutitin.weebly.com/uploads/1/3/1/4/131454352/e415535413ad4.pdfIn PDF document text
    • https://vofirojaj.weebly.com/uploads/1/3/1/6/131637635/pozeboxabij.pdfIn PDF document text
    • https://vipomumukewa.weebly.com/uploads/1/3/0/8/130813786/1ecaad8639147f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502819/normal_5fe715ef68271.pdfIn PDF document text
    • https://gatamerat.weebly.com/uploads/1/3/4/0/134000446/404637684.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zidenigad/82089927793.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/rovatexenixumupedojowaz.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/jazuzemesixe.pdfIn 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

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_off0000dda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA0 5680 bytes
SHA-256: f6218b6329e4193c60e966cdbb3b4c36727a54479fe45883e4fc5bba58bbf18a
font_01_sfnt_off0000f0ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0ED 10496 bytes
SHA-256: 45f4fce0c00639595b375d56c7e2fae0c75b8bbcb3b40d2371b6c1ebd926a9d1

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