Malicious PDF — malware analysis report

Static analysis result for SHA-256 80c7a0bbfa634bf3…

MALICIOUS

PDF

42.9 KB Created: 2020-08-14 20:59:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 267b3274e4f9481933c556bb9b2d9ca1 SHA-1: f6459cedd31b263b755266b5f727b30bb3780404 SHA-256: 80c7a0bbfa634bf3bb179a99bd7d4fb42ac77963479978c9ee49bab987060974
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body and heuristics suggest a lure for free downloads or reports, aiming to redirect users to malicious infrastructure. The ML classifier strongly indicates maliciousness.

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.ru/pify?keyword=bintulu+port+holdings+bhd+annual+report In PDF document text
    • http://mareloma.themakerarian.com/uploads/1/3/1/4/131406226/420961212.pdfIn PDF document text
    • http://files.brickyardphoto.com/uploads/1/3/0/7/130776712/411830.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/1/0433/9413/8268/files/pokemon_black_rom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9807/0435/files/dibebevidevigumenilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0913/8075/files/6491020144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90209356055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/a_natural_approach_to_second_language_acquisition_and_learning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7886/7354/files/zegenumirigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/65205036706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/94734353133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9151/5809/files/92555257609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/21273734898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0499/2408/files/actividades_auxiliares_de_comercio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0455/4385/0149/files/92433013698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9799/6960/files/biblical_meaning_of_dreams_of_animals.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00004afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AFD 5408 bytes
SHA-256: 587f2b202725b0b89ec3f408e6d1bc0a9fbe56c65d0580b27727bcd96e5ea7eb
font_01_sfnt_off00005d4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4A 14208 bytes
SHA-256: e719fab141d50065c01a287a36c1b7cab519dbefabc2d7f2944d9913f58dfa82
font_02_sfnt_off000089a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A2 16060 bytes
SHA-256: df1d2c903cabdf2976887e260da0b25217edeb5ce2b71f315001024534e8e210

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