Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba5fc45df99156ba…

MALICIOUS

PDF

33.8 KB Created: 2020-08-14 22:23:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2362ea795500b5c8333bc6fcc53373bd SHA-1: 56cfa90ed30a892866dfed86d1970d78a2d91f05 SHA-256: ba5fc45df99156ba31c533ca1879ac42beeaa2a3d2075c8f02fb8d04e0d8d644
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which points to 'https://ttraff.cc/pify?keyword=personal+pronouns+worksheet+for+class+3'. This URL is presented within the document body, disguised as a link to a worksheet. The PDF also contains a mass external PDF link farm, with many links pointing to shopify.com, but the primary malicious indicator is the redirector. The ML classifier strongly flagged this PDF as malicious.

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=personal+pronouns+worksheet+for+class+3 In PDF document text
    • http://files.pasturedpoultryinfo.com/uploads/1/3/1/3/131384081/2805928.pdfIn PDF document text
    • http://tunopo.mommygeekmg.com/uploads/1/3/0/7/130739204/xelamadovetebawu.pdfIn PDF document text
    • http://nevenude.picturesquechange.org/uploads/1/3/2/3/132303035/5e828dde92.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/1/0431/6702/3259/files/veperadasomeragik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2756/0610/files/niwitofutifuwosogazusudum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8507/8434/files/lejomewazas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/12317276589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2761/8209/files/courage_under_fire_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1274/9469/files/assam_tribune_today_newspaper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/5891159450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/cambridge_key_english_test_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/careless_whisper_guitar_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/45672719737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/73952659351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1116/8663/files/advanced_combat_tracker_update.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_off000046a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46A3 5424 bytes
SHA-256: c343fee2058ee0d79749f734d63e77f45fcac869fa96d0c8fce781fd5bea65bc
font_01_sfnt_off00005920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5920 9776 bytes
SHA-256: fccc97495e26ad8f5343566361a28b5290051bfac2b6912a45b30f68030c6e58

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