Malicious PDF — malware analysis report

Static analysis result for SHA-256 112f0586cd609ebc…

MALICIOUS

PDF

38.9 KB Created: 2020-08-21 13:50:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4c3b08634702f7b20af47880d2c8018 SHA-1: 036e0e504131a9e5806f84738dbfdae164099811 SHA-256: 112f0586cd609ebc5dcad12067bc4afeb6bf08906b900e153084ef576d5a8672
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.ru) that is flagged as malicious. The document body and heuristics indicate a lure for free downloads, likely a phishing or malware distribution attempt. While no scripts were explicitly extracted, the presence of embedded URLs and the malicious redirector strongly suggest an attempt to lead the user to a malicious payload or phishing site.

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=nitrogen+fixation+notes+pdf In PDF document text
    • http://files.alexandroquerevalu.eu/uploads/1/3/1/6/131636828/nivam_gerizukunami_gozuwakivok.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/1/0427/4677/3660/files/wudikuxepubixafigag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/free_song_careless_whisper_george_michael.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6717/8134/files/git_sub_repository.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/fodozusaduwesamevixamemep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1959/2099/files/physical_science_grade_11_text_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9815/9784/files/1451067798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0453/2648/files/71471785931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3989/0327/files/wagalidig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9875/1641/files/porque_el_alcoholismo_es_un_problema_social.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5756/0217/files/baadshaho_movie_hd_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7736/0029/files/ziwuwugovowagajakekeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/51862040098.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_off00005be3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE3 5216 bytes
SHA-256: 8ac6467b53db18e3f8462f7ce00cd7e0d56e6813cdf7dd9158be45a237bbab81
font_01_sfnt_off00006db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB6 9848 bytes
SHA-256: 9d3f90b7a8e8454f20ab02983cfb8f09a5138b0802262c57660c3f970c312918

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