Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab2d09cf4cc6154…

MALICIOUS

PDF

31.0 KB Created: 2020-08-22 00:54:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 43225e2cc1048d967109833df0c501da SHA-1: 59e1cf5fa800af54446148814e52d440ab72b4e6 SHA-256: 7ab2d09cf4cc6154701d499124caa1dcd2769653c706b34c9427464253a49357
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) which is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL and benign-looking PDF filenames, suggesting a link farm or SEO poisoning tactic to lure users. The ML classifier also strongly indicated 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=funny+baby+laughing+ringtone++zedge In PDF document text
    • http://gijefa.northwestembroidery.com/uploads/1/3/0/8/130874493/femanofumekazexasi.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/1/0432/6277/1358/files/vinesabowezisijodufedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6022/3387/files/zajaselemem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4164/2906/files/24085773418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6776/8981/files/ichigo_hollow_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0250/2054/files/80s_drum_samples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5594/6655/files/raag_bhairav_alap_notation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/solving_logarithmic_equations_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2549/7250/files/opito_bosiet_standard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9241/8468/files/los_angeles_dodgers_schedule_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/mixutegatananal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/3403/5622/files/miya_bhai_song_free_audio.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 1

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_off00003f57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F57 5156 bytes
SHA-256: 429f4febc3eb8e35266a3bb4b1769911c6b7bdd1fe9c92bd63364a72fea377b7
font_01_sfnt_off000050e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50E1 8892 bytes
SHA-256: 812f4b3f19645e87b78a2978f49dc91802a9e5b55e669b105b1a03aaa0512bf9

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