Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb058760eac8c99e…

MALICIOUS

PDF

72.8 KB Created: 2021-01-30 08:29:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6b7795e4bcd73706aad6a69cd354492a SHA-1: e7d4347021d480f2e3ac6b63ee67460731bb06c8 SHA-256: fb058760eac8c99e0bea9deeacfd090dda7128f66b36baf89243ca696b962c4b
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://druttle.ru/infin?keyword=axminster+bs350+bandsaw+manual PDF link annotation
    • https://cdn.sqhk.co/xuvisisitinu/hgIAXji/nulugerosuwazir.pdfIn PDF document text
    • https://jawizadobem.weebly.com/uploads/1/3/4/7/134773472/347020.pdfIn PDF document text
    • https://kedixusivazusug.weebly.com/uploads/1/3/4/8/134869684/1d0755c943e82.pdfIn PDF document text
    • https://xajixaze.weebly.com/uploads/1/3/2/3/132302973/linaputovimojuf.pdfIn PDF document text
    • https://xevubevisebu.weebly.com/uploads/1/3/4/7/134754503/09bb233ef.pdfIn PDF document text
    • https://xemibunadagom.weebly.com/uploads/1/3/4/6/134639404/kasuvijulen.pdfIn PDF document text
    • https://sixebujexe.weebly.com/uploads/1/3/0/7/130740217/tokes-jokopoman-xufaweji.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388426/normal_5fe1b89b2ffb6.pdfIn PDF document text
    • https://kafaxidaduxeb.weebly.com/uploads/1/3/1/4/131438036/6321183.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/dezajok/easy_fortnightly_budget_template.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/29095428074.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/sample_answer_sheet_of_writing_task_2.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/80091785324.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/43899280085.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/endeavour_episode_guide_season_6.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/mcgraw_hill_answer_key_math_grade_9.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_off0000e00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00E 5692 bytes
SHA-256: 1a8b7d9c84f86e7117da1f6ee8c6dfe42b9654a39ae41ecbffba44993ae98e76
font_01_sfnt_off0000f369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF369 10184 bytes
SHA-256: 947a2536e9136ea8ac73906a7e5ec0f30d5032e4542da30107057c822af08fac

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