Malicious PDF — malware analysis report

Static analysis result for SHA-256 b703c6422370921d…

MALICIOUS

PDF

54.2 KB Created: 2020-08-16 13:10:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6fbdaae7d1a5f18f4112f44c6e698462 SHA-1: ad50cea3b108741117bb004d93a50148df97b604 SHA-256: b703c6422370921ddbe246b272296126aacd5f51feef3837f4e57031b9719487
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used to redirect users to malicious sites. One critical heuristic firing indicates a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=econometric+models+pdf'. The document body, though heavily obfuscated, contains this URL and other links pointing to Shopify domains, suggesting a link farm designed to 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=econometric+models+pdf In PDF document text
    • http://puzevedo.kelseybrownedu.com/uploads/1/3/0/8/130813136/xunebipono.pdfIn PDF document text
    • http://dopatumel.rawearth.ca/uploads/1/3/1/4/131453520/mukigerowotiguwizulo.pdfIn PDF document text
    • http://files.effinghamelementary.org/uploads/1/3/2/3/132302944/detoduz.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/1/0428/3197/0471/files/vukerakuriduzugamamuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/8805/5191/files/34544301735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/microbiology_culture_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2215/3890/files/giketufusisuliboxetilodig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/the_wheel_of_life_elisabeth_kubler_ross.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6423/7992/files/rapid_appraisal_methods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9235/1907/files/9426839491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2816/0420/files/silugazexowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6114/8832/files/cazadores_de_sombras_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7479/8247/files/41424777601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/86998724591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1782/2620/files/22443249170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3681/0152/files/18154394781.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_off0000960d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x960D 5048 bytes
SHA-256: 4abfaa7870e5f5434c1d069b73a473aef4683ffc8601af87c0bb3b45a2ba01a8
font_01_sfnt_off0000a71d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA71D 10856 bytes
SHA-256: 90a4ca56d9035ab4561d6bf6cf0930a7750ef6cdb292d15275f68364b44ef8e8

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