Malicious PDF — malware analysis report

Static analysis result for SHA-256 911df26c6b7f38e3…

MALICIOUS

PDF

41.6 KB Created: 2020-10-10 19:48:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2ce0024858429090b722389b92a31bf6 SHA-1: 53127b0d196b19fad04d220ab7c01b77a5c040aa SHA-256: 911df26c6b7f38e33f794dca3c909d98b6b3cfd7cae9b2b4fc8f031ea19954f9
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://cctraff.ru/pify?keyword=the+blood+still+works+piano+chords In PDF document text
    • https://site-1041766.mozfiles.com/files/1041766/63672202683.pdfIn PDF document text
    • https://site-1036885.mozfiles.com/files/1036885/jejukiruwuvewe.pdfIn PDF document text
    • https://site-1042355.mozfiles.com/files/1042355/78934304682.pdfIn PDF document text
    • https://site-1042607.mozfiles.com/files/1042607/gizigefugageko.pdfIn PDF document text
    • https://site-1036796.mozfiles.com/files/1036796/lunujanu.pdfIn PDF document text
    • http://files.montagemama.com/uploads/1/3/0/8/130814284/xovuwefabadagi.pdfIn PDF document text
    • http://files.maybrittohman.com/uploads/1/3/1/1/131163846/kobabizokel-kuwuraz-divewiz-gidezoxed.pdfIn PDF document text
    • http://metapi.farm-freshorganics.com/uploads/1/3/1/0/131070351/c00bae3a01bd97.pdfIn PDF document text
    • http://files.ambrosescholars.org/uploads/1/3/1/4/131453453/a17c08d391e0.pdfIn PDF document text
    • http://files.kategustin.net/uploads/1/3/1/8/131871505/6202374.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0565/2642/files/vozabiwivigemurus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8197/4435/files/temezabileguvimovekexiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5791/3749/files/raxepirijifobabozofuzobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3254/5944/files/cafe_trn_ng_s_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6658/8325/files/crazy_eyes_mr_deeds_meme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/viewsonic_vx2433wm_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/amy_tan_joy_luck_club.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2435/3960/files/benumuni.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6455 5404 bytes
SHA-256: 6284fbc7fab9186b6692961f91a80e957829fe49fcadf6e2fb01e9075fb87699
font_01_sfnt_off000076b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B6 10188 bytes
SHA-256: e93fd6b42309df3b83a128e4f40a3f5f66ccc458991687ed6610dcf081816e40

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