Malicious PDF — malware analysis report

Static analysis result for SHA-256 d531214314817dad…

MALICIOUS

PDF

62.0 KB Created: 2020-08-12 21:45:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ebce077f2d263254935ba23ffd9261ec SHA-1: 338096fac776a69c3a3c0685e5e5b1dc9f6483c0 SHA-256: d531214314817dad186fce3d84e1d87a08221b11e1de55cb0f322fabd053de0a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a prominent link disguised as a download for a "black belt memory jogger". This link, `https://ttraff.cc/pify?keyword=black+belt+memory+jogger+pdf+download`, points to a known malicious redirector. The PDF also hosts a large number of other links, many pointing to benign Shopify URLs, likely as part of a link farm to improve search engine ranking for malicious content. The ML classifier strongly indicated maliciousness.

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.cc/pify?keyword=black+belt+memory+jogger+pdf+download In PDF document text
    • http://files.gettysburgchambermusic.org/uploads/1/3/1/3/131398000/1767454.pdfIn PDF document text
    • http://files.midwestdressage.org/uploads/1/3/0/7/130776033/givefosilavejowud.pdfIn PDF document text
    • http://files.lanierbotanicals.com/uploads/1/3/1/1/131164567/gulisigajotoxuz.pdfIn PDF document text
    • http://files.mcmnapa.com/uploads/1/3/1/4/131409574/6459602.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/1/0439/3687/4651/files/72626489746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8570/9987/files/10148192545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9187/0375/files/xomoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/xogutekelupavigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4666/6389/files/7690926437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9531/6896/files/nenizunevetoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5944/4896/files/handbook_of_climate_change_mitigation_and_adaptation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7923/6774/files/good_presentation_skills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/mabila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8511/0171/files/6044691001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0697/5382/files/85260071476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3860/4450/files/lobiwaduxiparup.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_off0000b348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB348 5820 bytes
SHA-256: 09d1fa1b56a43722b158658426e1779a2593d50eeb719a00af7169bc0e7bb003
font_01_sfnt_off0000c724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC724 10424 bytes
SHA-256: 78aef9f3179024abad87835304ddb07124cf96e4a3796e8b425e40a3a39b9adb

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