Malicious PDF — malware analysis report

Static analysis result for SHA-256 d194dc3188c6d1df…

MALICIOUS

PDF

71.6 KB Created: 2021-01-14 10:58:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 24adea00051c3be4322f5f67d6848f7b SHA-1: 47aad34815837212cae23bffcd9f74dbe3b832d1 SHA-256: d194dc3188c6d1df9ecd582f53064a9669160450d138a83d1df55de59d959f37
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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=between+these+sheets+lyrics In PDF document text
    • https://bisowepot.weebly.com/uploads/1/3/4/5/134598436/fe9d27057daa8.pdfIn PDF document text
    • https://wagezulixi.weebly.com/uploads/1/3/2/6/132695300/fepujax.pdfIn PDF document text
    • https://lobududovidaxu.weebly.com/uploads/1/3/3/9/133997350/51abd4fc177936.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388427/normal_5ffbf6f862fb6.pdfIn PDF document text
    • https://bopexetijajab.weebly.com/uploads/1/3/1/4/131411078/a6f38fd4.pdfIn PDF document text
    • https://bugekawimilu.weebly.com/uploads/1/3/4/5/134589579/jelapazo.pdfIn PDF document text
    • https://nurosizakudagag.weebly.com/uploads/1/3/4/6/134699554/dijanegebitipe.pdfIn PDF document text
    • https://jifejajazarig.weebly.com/uploads/1/3/4/3/134307839/d028c9ec89.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/mekonulegipero/86022466011.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/implosion_mod_apk_data.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/8959104228.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/shadowrun_4e_background_count.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/gusebeniki.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/60932537959.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/kojar.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_off0000dd90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD90 4920 bytes
SHA-256: 8c31fab6b00baf0c5bf18c93be960edd473166440358c7066044da19d56feb54
font_01_sfnt_off0000ee61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE61 10328 bytes
SHA-256: 978b64dbe0b08d022f6e94bb1fb31351ee91d780861525dceaff22e1c9f6e452

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