Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d8add551458e48…

MALICIOUS

PDF

39.2 KB Created: 2020-08-21 15:09:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 461b2e10272b6e127fe3b82f656aeef1 SHA-1: 7989586662f0a73ad715c51b11a1aaafb815a415 SHA-256: f0d8add551458e4880203b3c5656dffb22b2c50405a98045b544ea862c9fd6f6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF contains a large number of external links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the URL to the malicious redirector and references to educational content, likely a lure.

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=conjunctions+to+express+time+and+cause+worksheet In PDF document text
    • http://files.familyminded.com.au/uploads/1/3/0/8/130873822/jejemagapi_fonolago_geguni_xawomavuf.pdfIn PDF document text
    • http://files.bhaktiyogi.org/uploads/1/3/1/4/131437276/2033441.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/1/0433/3905/5258/files/luzojepezinolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1205/5463/files/97750029068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8316/2019/files/minecraft_ps3_adventure_maps_downloads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/difference_between_ontology_and_epistemology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/molutorebelewudeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1516/0487/files/57457068835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5198/2754/files/chart_patterns_in_technical_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/nadusot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/kukusivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4749/2506/files/tafabusefi.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_off00005b98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B98 5484 bytes
SHA-256: d560c15b5eb5995d413e1c4baccca9345dfaad9e8407829fdadab652bd3dc719
font_01_sfnt_off00006e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E29 9900 bytes
SHA-256: 8c0e4619c1846e6555a6ac133f1befdd374f37f4bd25187c7ce69d661e98d75f

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