Malicious PDF — malware analysis report

Static analysis result for SHA-256 13d20b1191b04dc2…

MALICIOUS

PDF

44.1 KB Created: 2020-08-01 18:09:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52d7252b049e1b0ae6db31e559f4c89f SHA-1: 5da93693e5e99385a6d5076c54ce71a0501f177d SHA-256: 13d20b1191b04dc261b853a49ab523eafff1e42439f175218dd2dde1a660848d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of an SEO link farm. The primary redirector URL, 'https://ttraff.com/pify?keyword=free+quickbooks+training+manual', is flagged as malicious. The document's content, though heavily obfuscated, suggests a lure for free training manuals, a common tactic for phishing or malware distribution.

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=free+quickbooks+training+manual In PDF document text
    • http://files.nourishthefire.com/uploads/1/3/1/4/131410736/vavilosake.pdfIn PDF document text
    • http://files.hrmis.es/uploads/1/3/0/7/130775249/mujobedejexakodabux.pdfIn PDF document text
    • http://files.belmardemocrats.org/uploads/1/3/0/7/130776228/795741cad6266.pdfIn PDF document text
    • http://files.jerniganlandscaping.com/uploads/1/3/0/7/130740517/61526a051.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/1/0433/2670/1726/files/39664515323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7329/0908/files/jovivud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/51093519451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1916/6105/files/63960524232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3973/5464/files/23770498354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9504/6824/files/lakedowijomebob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7664/9127/files/forerupinuwebiwopuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/bodorule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/putikusumidiveze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0600/9242/files/gubutetazokirorile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6030/5825/files/jitajobibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1595/4847/files/vebaxajusafunimoxegetal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3345/1944/files/90221158709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8548/8543/files/tivivirorodezijef.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_off00006e14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E14 5404 bytes
SHA-256: 7cfcd21d2b9533e80add391933756b2f20125a00c4f29bf6772dea1926cd154c
font_01_sfnt_off0000806c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x806C 10320 bytes
SHA-256: 04a2cfc0eadc6bdae9b822eee36d1aa2be569a13370834b74f6b81e7683a332f

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