Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f8c169a8b483736…

MALICIOUS

PDF

39.6 KB Created: 2020-08-23 02:25:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d91d5144a54049ed10cf84f43938a6e2 SHA-1: fce4e8b2fcdfc589ef499700425bdda7b4d4a5ab SHA-256: 7f8c169a8b483736b4d2ac761c2e90434033a7980966a511b032673c9d17936b
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a redirector service. The document body, though obfuscated, contains a URL that appears to be the primary lure. This suggests the document is designed to redirect users to malicious sites, likely for phishing or to download further malware. No scripts were extracted, but the presence of numerous links and the ML classifier output strongly indicate malicious intent.

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.ru/pify?keyword=affidavit+of+scrivener%2527+s+error+form+florida In PDF document text
    • http://files.epicrop.com/uploads/1/3/2/6/132681647/xazomuzaxep_jigovugewuja_xepipe_jegaxazab.pdfIn PDF document text
    • http://files.classicshedsandgazebos.com/uploads/1/3/0/8/130874046/306039.pdfIn PDF document text
    • http://files.unitedkingdomvintage.com/uploads/1/3/0/7/130740517/kegizojikobiti.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/1/0438/2470/9782/files/png_photo_background_image.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8927/2725/files/72929285726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8860/9429/files/69913490452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0638/5558/files/mowezokarukomoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4686/0960/files/8678868398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5554/5497/files/46836386337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/talimujefudujovejotob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kefemomorevogik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/76304343395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/nivajatumiberumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/womonevixaxijebuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4601/8967/files/eastern_guilford_middle_school_report_card.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3680/1181/files/14777965364.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 3

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_off00005c7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7F 5252 bytes
SHA-256: 4de10f0bc5cc8bba650f6fac56d4f990963a35b83b263ac91b4b93338cffccab
font_01_sfnt_off00006e49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E49 10212 bytes
SHA-256: 07934739a343ccacd4ffd630f3d7d9a4b327e832bd03f05921a49416142a1e2f

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