Malicious PDF — malware analysis report

Static analysis result for SHA-256 782fd0c41fed0ea7…

MALICIOUS

PDF

61.9 KB Created: 2020-08-26 19:13:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1cd3e4a735c298b206b501782e406c8c SHA-1: 170d62aec148a5f28c1a595d1bc493c7fd9d8cce SHA-256: 782fd0c41fed0ea74954ae154bb8bb08b2c8bbb855f8951868940985a9d7757c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though partially corrupted, contains text related to a 'study guide' and the malicious URL, suggesting a phishing or malware distribution lure. The heuristic PDF_SEO_LINK_FARM indicates a large number of links were generated, likely to improve search engine ranking for malicious content.

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://ttraff.com/pify?keyword=advanced+cicerone+study+guide In PDF document text
    • http://files.moriahit.com/uploads/1/3/0/7/130776225/xorozoxekedu-wewuxubewog-labujoj.pdfIn PDF document text
    • http://files.gumbeerfest.co.uk/uploads/1/3/1/6/131606965/gusafozenidu.pdfIn PDF document text
    • http://files.maximsdogue.com/uploads/1/3/1/8/131856186/menodonu.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/1/0441/1441/1672/files/suraritinezetobik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/sqlite_for_windows_xp_32_bit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/tenowut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/656348901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4984/2850/files/viber_for_samsung_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3452/6375/files/lagexoziremodefobuzim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9212/3556/files/fusidolunifolisuneviji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1991/7717/files/79421037077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/susuzanepepotoniwisaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2636/6116/files/35224574322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3222/9541/files/kilirugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3683/5993/files/chaotic_sword_god.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 7

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_off0000b20c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB20C 5228 bytes
SHA-256: 4f956c961fbf8c8ed6f233cc41a328748e6bd363721f081661ebe66a2b5a26d5
font_01_sfnt_off0000c3e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3E7 11196 bytes
SHA-256: af145fbb26d22e02006a8f8afc8c9d95c254f355b029ee5de25896017c80aa08

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