Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5ff32f8692d8ee5…

MALICIOUS

PDF

70.0 KB Created: 2021-02-09 10:45:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 5f78f88fb8a98b2a98543215535f956a SHA-1: b910b819bc88e6299688a505ecb5d60307a4a1fa SHA-256: a5ff32f8692d8ee55238c688ab4b1619917857d662442b6c3eb9994638f12fa2
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/aws?utm_term=harrison+ny+police+report PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455914/normal_5fe4c442cefd2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465914/normal_60052ef193cba.pdfIn PDF document text
    • http://rbqjkwklnd.xyz/vampire_the_masquerade_5th_editionsd9ns.pdfIn PDF document text
    • https://cdn.sqhk.co/bomikiwolug/ggVfhe2/80s_music_bands_list.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483365/normal_601392d8717e6.pdfIn PDF document text
    • http://afracheat7.xyz/39085536676z2j61.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vosowetawevu.epizy.com/42152437538.pdfIn PDF document text
    • http://litemulum.rf.gd/vujuvepupabolefozebumowiv.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/fizewibogiluwerizekimes.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/game_theory_economics.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/cisco1941_k9_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/wowesenugogopo.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/84778613370.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/soxefaguge.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/trekking_himalayas_without_guide.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_off0000d3b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B2 4988 bytes
SHA-256: 0c3e7d0380d2179ac007dfebaf7970081d183a6181577e9efcd40af32a63ea6f
font_01_sfnt_off0000e4c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C2 11236 bytes
SHA-256: 9a6f2773163122f5ac2e5e15b7b56d1bf431f5aa10513ba5c80120e05d499e14

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