Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e925af84ce8cc1c…

MALICIOUS

PDF

66.9 KB Created: 2021-03-01 17:07:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 451ce9eb46955c0cfeedf1a4919e96cc SHA-1: dde60be6c6c573dcf0edb39f2cfa417c26fb0326 SHA-256: 6e925af84ce8cc1c1c325aad80a53f02bf67be1dcf1e033226d3289e46a7113c
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://jottigo.ru/award?keyword=how+to+connect+your+chamberlain+garage+door+opener PDF link annotation
    • http://sabovibin.medianewsonline.com/rimujunokinirodaxudepi.pdfIn PDF document text
    • https://xowavexinoj.weebly.com/uploads/1/3/1/4/131408618/5780684.pdfIn PDF document text
    • https://xoludebule.weebly.com/uploads/1/3/4/5/134526363/8682540.pdfIn PDF document text
    • https://pixavegabub.weebly.com/uploads/1/3/5/3/135307945/dfc7bb7a0f81.pdfIn PDF document text
    • https://rurefisofe.weebly.com/uploads/1/3/5/3/135325463/mofadukepabe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403808/normal_5fe998fcb8943.pdfIn PDF document text
    • https://luwanolukurodo.weebly.com/uploads/1/3/5/3/135397368/jexelenadix.pdfIn PDF document text
    • http://axecheat5.xyz/strengths_and_weakness_job_interview_answers39mep.pdfIn PDF document text
    • https://wokugosag.weebly.com/uploads/1/3/4/3/134339956/komomavawurego.pdfIn PDF document text
    • http://nutetuxiv.mygamesonline.org/fender_twin_reverb_68_reissue.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502268/normal_5fd7228e32212.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458417/normal_60331e6a4cdf7.pdfIn PDF document text
    • https://tulalesin.weebly.com/uploads/1/3/4/8/134876190/7155686.pdfIn PDF document text
    • https://betoxugibujimiv.weebly.com/uploads/1/3/1/0/131071043/6243419.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sutexuvidag.myartsonline.com/word_microsoft_table_of_contents.pdfIn PDF document text
    • http://wutesejib.onlinewebshop.net/lomizuluruwabaxinis.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_off0000ca38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA38 5604 bytes
SHA-256: 050ae23b0307930f5f66fbcb31a532d8696d5d269605860b08d1169dcf716a6e
font_01_sfnt_off0000dd2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD2B 9660 bytes
SHA-256: e3e1da0de147c449b6bb314eea1ebf2c2677c95f96606e6a32a35da598177ed3

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