Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc5b1cd3477b65c2…

MALICIOUS

PDF

54.0 KB Created: 2020-07-31 19:34:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5d759d252fdb0036592395c4838fa0c4 SHA-1: 43f51c5d6bdd6fb8dd74c701fcf35194400a68af SHA-256: fc5b1cd3477b65c21054cf1114c767dc8b165c6bd2aaf4576c657a8ce1b79efc
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, which is characteristic of a link farm designed for SEO manipulation or to obscure malicious destinations. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=true+false+python'. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The presence of multiple PDF links and a malicious redirector indicates a phishing or scam attempt.

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=true+false+python In PDF document text
    • http://files.neisdoap.com/uploads/1/3/2/3/132303378/4333660.pdfIn PDF document text
    • http://files.msdlaroche.com/uploads/1/3/0/8/130813095/ddae113.pdfIn PDF document text
    • http://files.mariosmathtutoring.com/uploads/1/3/2/3/132303219/1084528.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/1/0433/4492/0734/files/51726187974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0517/4179/files/buwejobexemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51994241049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5449/0012/files/51720315766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/tazufanukezotefexadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3902/2485/files/34569832493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/tiwoteti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/63348195595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1312/7844/files/kogupitud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6195/9073/files/tanenuzavugofibujidoxig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8229/3141/files/12552300832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7668/8798/files/gokav.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_off00008ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA5 5040 bytes
SHA-256: ade8a365ed5a51d9ccfbd4cb6c7257f368527596a86b7c583259753dcaff696b
font_01_sfnt_off00009fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FCD 13552 bytes
SHA-256: ed592e92afeef01127569698922efb006f3d73f5e63e9a732556ad5af2ca1520

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