Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe1a0fad64a0578a…

MALICIOUS

PDF

70.5 KB Created: 2021-02-24 13:11:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f11945897981d44470194a19626f926f SHA-1: 0196e622651a584f2c6d612d12d368e8506a9ab6 SHA-256: fe1a0fad64a0578aeebc4f0b03bd90946de09e598bf91e9e5bccdeaea1df24c5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://leonvi.ru/wix?keyword=umich+ipe+funding PDF link annotation
    • https://gapivawaki.weebly.com/uploads/1/3/1/8/131857152/gekuwozagi.pdfIn PDF document text
    • http://skidki-day.site/7239697454b6qm8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408475/normal_6013e699c7548.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446158/normal_5fd81504ae403.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367927/normal_5feaf886d3db9.pdfIn PDF document text
    • https://davugewozo.weebly.com/uploads/1/3/1/4/131408984/bitofama.pdfIn PDF document text
    • https://gobunelesivuwol.weebly.com/uploads/1/3/2/3/132303092/7702262.pdfIn PDF document text
    • https://bijafifevidajun.weebly.com/uploads/1/3/6/0/136051066/wuritelesitikegud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492574/normal_5fdd9a6d37ce0.pdfIn PDF document text
    • https://vewudati.weebly.com/uploads/1/3/0/8/130873955/miwutejita.pdfIn PDF document text
    • http://ujjjrrrrr.space/8837710453013lb4.pdfIn PDF document text
    • https://nulivuxod.weebly.com/uploads/1/3/0/7/130776854/2397988.pdfIn PDF document text
    • https://mepodatadun.weebly.com/uploads/1/3/1/4/131452799/f60c7e47f4e90e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405409/normal_5fd1234102e63.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://renirorevebu.epizy.com/rudeka.pdfIn PDF document text
    • http://nexopuvesoreben.epizy.com/divavukorolawo.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD776 5044 bytes
SHA-256: 098a300cbcf66e7b23388e920b56ac16785d854a5d97edbd79bff8770a9297e2
font_01_sfnt_off0000e885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE885 10704 bytes
SHA-256: c6c6d7b18a13ac5499e81acff50efc9a78de02892557c3321606ba11f55cd3ad