Malicious PDF — malware analysis report

Static analysis result for SHA-256 3591f1e4ed709b1c…

MALICIOUS

PDF

59.7 KB Created: 2020-12-30 22:36:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: c0a86c31fc7b148e4320082817afe998 SHA-1: 0a72d3dc7f3b28b5d500c5ce395b73b12722570c SHA-256: 3591f1e4ed709b1c1d057178cf7ced09c2a4973594f9676ad48f94c8577290f3
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/mozel?keyword=napa+auto+parts+appleton+wisconsin In PDF document text
    • https://radopubida.weebly.com/uploads/1/3/4/6/134608457/0d1ea6a738.pdfIn PDF document text
    • https://cdn.sqhk.co/maputaliki/9gjCUha/kid_birthday_party_rentals_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/ratugetaj/RBBGMvI/york_yt_chiller_engineering_guide.pdfIn PDF document text
    • https://gitufigekuxos.weebly.com/uploads/1/3/4/6/134634758/moximilu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417643/normal_5f9cbd5961daf.pdfIn PDF document text
    • https://pujuwofox.weebly.com/uploads/1/3/4/8/134882524/306c3.pdfIn PDF document text
    • https://zaxivufib.weebly.com/uploads/1/3/5/3/135306799/4050761.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/60a3d8d7dd44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392864/normal_5f90f1e8ce7eb.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/wutogugej/79275908650.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/ansys_fluent_theory_guide_citation.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/corel_draw_portable_x5_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/simogexowemunaxosimi.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/us_polo_assn_watch_manual.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_off0000b059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB059 4988 bytes
SHA-256: 19be3271a28e9e91097223cd1dfc3212d59541d64c68b8fd8ab1791dac7a3189
font_01_sfnt_off0000c176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC176 9572 bytes
SHA-256: 23f465ddb708fe3bbbc3c78a711e3cc9149250fd28ae30f4557c993513915e8d

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