Malicious PDF — malware analysis report

Static analysis result for SHA-256 78288bba324edfd5…

MALICIOUS

PDF

42.3 KB Created: 2020-08-08 22:39:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4f17001a82408b9e7ac507893e4556b SHA-1: 066c7a547764cb70514e3190a1eb9da1ce013fd5 SHA-256: 78288bba324edfd52755ffadfe67c4c04136cbb8313220dd2ffcb0dd78cea419
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. This suggests a phishing or scam attempt, likely using SEO tactics to attract victims. The document body itself contains garbled text but includes the malicious redirector URL and benign-looking PDF links, reinforcing the 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=2020+hospital+accreditation+standards+pdf In PDF document text
    • http://files.lauracurtisstudios.com/uploads/1/3/1/4/131453917/8373191bb1c025e.pdfIn PDF document text
    • http://files.godfromatoz.com/uploads/1/3/0/8/130874691/vijodotije-mavovolovavitas-xoboruvipem-piporarulevoli.pdfIn PDF document text
    • http://files.therecruitmentteam.co/uploads/1/3/0/7/130738799/3844791.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/1/0438/8149/6744/files/bopugepewetopimawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8567/6188/files/vuvedamefujerizapidemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5320/1046/files/rusebage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9812/9062/files/77067954675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2607/8101/files/65699346990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0250/6909/files/infosys_aptitude_test_papers_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25781613666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tesip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/blender_2._79_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/18827081432.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_off0000673f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x673F 5424 bytes
SHA-256: ff5f71d5d690c61b9ddf2c8fedef0be9b8e28861b59ae10a1ed6e50d1bb47b1c
font_01_sfnt_off000079a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A7 10212 bytes
SHA-256: c194c35a559f6bd7e023d5c9ade4387fdc244ba416915fbbbdb30eb4b5617046

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