Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cd596957fc6b231…

MALICIOUS

PDF

51.4 KB Created: 2020-08-04 07:47:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: de0f3da06a209de84a448ea508e57802 SHA-1: e654b797aa9a8e621e5613d79ab05dddefa4dd97 SHA-256: 4cd596957fc6b231079a2d294ff79412617b99743b6eacd1ddf2121100ff97d6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL "https://ttraff.com/pify?keyword=fatty+acid+beta+oxidation+pdf", suggesting a lure to a malicious site. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm indicates an attempt to manipulate search engine results or distribute 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=fatty+acid+beta+oxidation+pdf In PDF document text
    • http://files.tlakelabs.com/uploads/1/3/1/4/131406478/rutizureduguruboka.pdfIn PDF document text
    • http://files.drmichelle.me/uploads/1/3/1/1/131163620/tugawujupadisizo.pdfIn PDF document text
    • http://files.chantillyfarmmerch.com/uploads/1/3/0/8/130813643/3459043.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/1/0432/5900/3038/files/gapokibumogezulokulegapid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3507/4465/files/avast_pro_antivirus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4479/7600/files/gasosarubopatoxuxiwovofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7498/4863/files/42030472215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/46442885608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8011/3562/files/20871543262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1308/7142/files/zijolejotikufoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7147/1767/files/12101450856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0334/6078/files/53475464638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9343/3246/files/john_deere_l118_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/matam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5598/0450/files/ruvodedoxinufibuzewo.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 4

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_off00008c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2B 5108 bytes
SHA-256: 5e3590bc5f0945f143d380ec6e15913a4d8cfaebbea5cfced2ffafe454db49c8
font_01_sfnt_off00009db2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DB2 10348 bytes
SHA-256: 469f3a0476be0c6e0bbe3610c7de1c026f49275a9ad3c6c1b32fe4db49b3f12d

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