Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a13510376da4aad…

MALICIOUS

PDF

95.3 KB Created: 2020-08-09 12:15:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bfa17acbdc244324629bcd7e3680a13b SHA-1: 26abc1cb25c11d86a7a2be530a9ccd2d87d9fad8 SHA-256: 0a13510376da4aad4bd640f4fbe6ade451f5fa05f07faafa2589cc396cdc04de
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc), indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead 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.cc/pify?keyword=inkblot+test+pdf In PDF document text
    • http://files.paloaltochineseschool.org/uploads/1/3/1/3/131380005/lekut.pdfIn PDF document text
    • http://files.companionsofchrist.org/uploads/1/3/0/9/130969375/3234800.pdfIn PDF document text
    • http://files.wabiphotography.com/uploads/1/3/1/3/131379134/ziwetepo.pdfIn PDF document text
    • http://nexaguxir.philipdallmann.com/uploads/1/3/0/8/130874284/5591249.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/1/0440/5913/2054/files/anemia_carencial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5858/4986/files/archicad_19_keyboard_shortcuts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1294/8121/files/29916348344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2107/2546/files/carmina_burana_o_fortuna_score.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7182/3262/files/tauren_druid_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0798/1214/files/1562241269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/77996641210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8191/5804/files/studio_ghibli_piano_sheet_music_advanced.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3426/4220/files/adobe_online_collaboration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6288/6549/files/city_of_endless_night.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2141/7122/files/6453184467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5396/4702/files/algernon_blackwood_the_doll.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/xitavareva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2314/6906/files/ansys_fluent_14._5_tutorial.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 8

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_off00013222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13222 4868 bytes
SHA-256: ad72a62a0112fd04952a8859c212503e408fc32f492ca7b2b8aba565bb575d17
font_01_sfnt_off000142c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142C5 13780 bytes
SHA-256: 90652f320f392085612014ac70fd65ac1364a3e996d0f7a064adcae5d6dae889

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