Malicious PDF — malware analysis report

Static analysis result for SHA-256 13d711e9c533ce24…

MALICIOUS

PDF

50.2 KB Created: 2020-08-19 17:20:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76a540fbabf76ba4367ae90d98fa7870 SHA-1: 6bc944a8b0600309ba6eb9f34e2543955eb2f332 SHA-256: 13d711e9c533ce248c9ac0113b2aa82c1687f0277ac213c1fcc3a73ae91edb48
194 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. A critical heuristic identified that one of these links, 'https://ttraff.cc/pify?keyword=nice+guidelines+ptsd+update', redirects to known malicious infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous SEO-like PDF links indicates a potential link farm or phishing campaign designed to drive traffic to malicious sites.

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=nice+guidelines+ptsd+update In PDF document text
    • http://files.sailabilitybatemansbay.com/uploads/1/3/0/7/130739919/3479141.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/1/0433/7215/0947/files/57272169801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9779/2415/files/razilufifatunos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1892/7778/files/1590460439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8879/6065/files/business_law_8th_edition_cheeseman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5597/1492/files/lelomezogulugawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1568/3743/files/super_mario_bros_3_nes_rom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9199/2484/files/kozefatukaxazalefijalalaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1021/2518/files/visojulidogujinuzodelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6277/2380/files/20967696436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8942/8637/files/radio_biafra_international.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_off000088cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88CD 5112 bytes
SHA-256: b847f37b7bcb4db11d5dbb16930ba1809d91c247ed74b36bc6e03d2bb5788e8d
font_01_sfnt_off00009a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A46 10028 bytes
SHA-256: ed47aa794df5410ab1791740bbdaa9b480b0c20201fd06e14b8acc055c9e6112

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