Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b5f7df1fa269aa…

MALICIOUS

PDF

52.7 KB Created: 2020-07-30 02:43:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7490c0e0bab810936a2c08b682d4bc0a SHA-1: 5069bb41b34c47da9192be02772b0e2899d1bda3 SHA-256: 96b5f7df1fa269aa87467f852ec0aa2e3b869e0f7425f8eb5d750463979db4d7
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains strings related to PDF downloads and the authoring application 'wkhtmltopdf', suggesting a lure for users seeking specific content. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing site or malware download.

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=asymptote+pdf+download In PDF document text
    • http://files.booksfoodtravel.com/uploads/1/3/1/0/131069968/2a0ef6266a5.pdfIn PDF document text
    • http://files.biancasaurusbites.com/uploads/1/3/0/7/130739780/e76ad3.pdfIn PDF document text
    • http://files.rsdliteracytools.com/uploads/1/3/0/7/130739782/rabejiba-makufi.pdfIn PDF document text
    • http://files.kidsklosetnc.com/uploads/1/3/0/7/130776346/14ed29760.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/1/0436/0686/8131/files/60694964529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/61262278867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/1880963162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3544/3875/files/10301790468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/38484642396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2801/3471/files/85553929607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sakumuxapiwitisozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5649/5783/files/mimowesatus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5698/8311/files/vegamizezigiwukerade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/5318529939.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_off0000907b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x907B 5016 bytes
SHA-256: 861626b88be6a538625c115c696be9ec8de74e537cc33d56bd2b188e453ca4fe
font_01_sfnt_off0000a191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA191 10636 bytes
SHA-256: c68ad506f4d12c0872f9f2f3d44802d81db6d25a9ed54836a15c6f6e3041046f

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