Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1c91acf805e2ffb…

MALICIOUS

PDF

42.1 KB Created: 2020-08-21 05:25:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: be356f717699d0010d85980d9ffce4e7 SHA-1: 2d41dc9dd2feacb3e809f7d13da46f0040642fa9 SHA-256: d1c91acf805e2ffbe1e1294592924732fcaff00cf699fc83dc7aa6de78197de3
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting a phishing or scam attempt. The document body includes a URL that points to a redirector, which is likely intended to lead the user to a malicious site. The presence of numerous PDF links, many pointing to Shopify, suggests an attempt to create a link farm for SEO manipulation or to host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=convertible+note+example+template In PDF document text
    • http://files.marmeladapicks.com/uploads/1/3/2/6/132696210/956438.pdfIn PDF document text
    • http://files.americasbluesmovie.com/uploads/1/3/1/3/131380641/zedozaduxixo-gimato-mikixejijudepi-nigedijevo.pdfIn PDF document text
    • http://files.woodsidewildebeests.com/uploads/1/3/1/0/131070216/2409670.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/1/0432/7879/4920/files/angle_construction_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7804/5096/files/42429818606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/lil_wayne_carter_4_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5957/5958/files/xukikedisapimob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0789/1877/files/mojokugedasobun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4713/2068/files/bixaxuneregelukanasenexov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6913/7305/files/jevamefifitawubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/52192585670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3517/2770/files/kewagalekoroxusoratuniti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5369/5647/files/mebiwekujak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/engineer_cosmetic_loadouts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9963/6390/files/ramogojizajamonevipa.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_off000066a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A7 4960 bytes
SHA-256: 315cbb064deead0b96843fbc49fde2e4e873303a70e182bd5c64e1f11b74f01e
font_01_sfnt_off0000776e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776E 10580 bytes
SHA-256: 3c2105dee0dc2952a90a11faac5f7ceefc184c20d2af074ef8b23e870c8e29e8

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