Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff2b62974947d488…

MALICIOUS

PDF

46.3 KB Created: 2020-08-22 22:24:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f1b5a6b6c016e322e0cd29fd5cf7a7c4 SHA-1: 00556ee9a24940991e1e17d8f6ef925ab972133c SHA-256: ff2b62974947d48808e41c6bf2c7a1535241a70112db4122e2bf3991c7413830
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, likely to improve search engine ranking and distribute malicious content. The ML classifier strongly supports the malicious verdict.

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=augmented+reality+market+research+report In PDF document text
    • http://files.davidson-eng.net/uploads/1/3/0/7/130738921/jobideribuva_dujifibebudej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9390/8887/files/ham_license_lookup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5608/6696/files/93335543873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2911/8627/files/90311457671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5108/0087/files/name_reactions_in_organic_chemistry_class_11.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7482/2043/files/expressing_cause_and_effect_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2707/1127/files/88291916807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/95830901711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5494/6721/files/vepakukamik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/xafon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74535711799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3577/6408/files/wunupibix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1007/1448/files/62289824438.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000661c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661C 5524 bytes
SHA-256: f5a6f9a548eb6451fd0e0ca1e153c5e29016c002d43225fc2b8cd6a243b0192d
font_01_sfnt_off000078b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78B5 11088 bytes
SHA-256: 4627b81c9f6da6424a8828dad0f71c78a72868b0bc8bc6e629e4b67bbe2d964d
font_02_sfnt_off00009e6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E6B 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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