Malicious PDF — malware analysis report

Static analysis result for SHA-256 884c63374e3070c5…

MALICIOUS

PDF

40.6 KB Created: 2020-08-04 00:05:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b832318623e0f91243c868addfb0862 SHA-1: 43bec509740977be1a0e9d2c0fc3cc6c5b6ed25d SHA-256: 884c63374e3070c52919de2cda7632ad60c84cc09cc3d40ab38b4223a129a279
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. A critical heuristic identified a link to a known malicious redirector, ttraff.com, which is also present in the document body. This indicates a phishing or scam attempt, likely using the 'answer key' lure to entice clicks. No scripts were extracted, but the embedded URLs and the nature of the heuristics strongly suggest a malicious intent to redirect users to harmful 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=carbon+cycle+gizmo+answer+key+pdf In PDF document text
    • http://files.allisonwarden.com/uploads/1/3/1/0/131070309/sizuvubetavav.pdfIn PDF document text
    • http://lofapu.skycampgreenwich.org/uploads/1/3/0/7/130776644/wewapezexupafur.pdfIn PDF document text
    • http://files.ms54.org/uploads/1/3/1/4/131453067/disotokufopub.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/1/0437/8093/1742/files/timit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/sefube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4988/5606/files/national_type_1320_ue_drawworks_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2150/8509/files/19394867789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/gitad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/bafuvukepadenexeloxivod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nefodegaxinavikiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7307/7409/files/91490170955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/35844358264.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/kubed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6803/0102/files/usps_zip_code_search.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2894/5815/files/98602798099.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 2

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_off00005f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F64 5828 bytes
SHA-256: c6f7016232603fb875fd67bcd25b9e9548ca47f66deae19e3f915989c8f27fbf
font_01_sfnt_off00007345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7345 10052 bytes
SHA-256: 9e34fc3f9683f51567a2bda4d5323e29ed95a0364dc1fc5d596b46a6231804d7

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