Malicious PDF — malware analysis report

Static analysis result for SHA-256 73137bf3c9a6b559…

MALICIOUS

PDF

39.9 KB Created: 2020-08-22 02:43:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: caae5cabbd9baee14d5c71ef835363d4 SHA-1: d772417ac313981f4f4e4554779b8dff5da0b9ba SHA-256: 73137bf3c9a6b559b4a8ee8f9a8729fab2f0ea30be38ca8b82aee0bcb899c976
194 Risk Score

Malware Insights

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

The PDF contains multiple links to redirector domains, including 'ttraff.cc', which is flagged as malicious. The document body and heuristics suggest a lure for downloading software, likely a driver, which is a common phishing tactic. The presence of numerous PDF links, many pointing to Shopify, indicates a link farm used to obscure the malicious redirector.

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=bluetooth+peripheral+device+driver+software In PDF document text
    • http://melafutil.thewineswirler.com/uploads/1/3/1/6/131606069/poxotulosizaviziju.pdfIn PDF document text
    • http://files.hollywoodfashionmerchandise.com/uploads/1/3/1/3/131384559/2886386.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/1/0462/7221/7237/files/dajajanipozota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/miridoxobipimulosalulibij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5204/7255/files/sifiluw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0318/3258/files/vizurufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/brothers_in_arms_3_mod_apk_revdl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6208/4262/files/43261576781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5925/6232/files/wapulowevasilidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9367/1588/files/pijofikerugijubikamegubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9721/8471/files/allelic_variation_and_gene_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9246/7109/files/wulopoxarixiwipolemosi.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 6

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_off00005fcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCC 5444 bytes
SHA-256: eb4219d42af80750e93297438214f2731c2f8b25aa73ec2097cc99533808a4c2
font_01_sfnt_off00007262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7262 9308 bytes
SHA-256: 39f91234bde695846869f4e89b1c3a38cad47b3aee2618597f661bd492c3f524

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