Malicious PDF — malware analysis report

Static analysis result for SHA-256 422cf2fe979954ff…

MALICIOUS

PDF

53.0 KB Created: 2020-08-02 20:14:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3954deaf0ced36f587f14de0c81f4080 SHA-1: 8312fe828e10af4194f381494ca0b1bf36b3ba37 SHA-256: 422cf2fe979954ffd5035bb71585ce28b5f79377f0e058c1a4267456f4200c36
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 'https://ttraff.ru/pify?keyword=icy+tower+charcters'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0435/8812/4829/files/furodarugekifajilobow.pdf'. The ML classifier also strongly indicated maliciousness. The document body contains obfuscated text and the URL, suggesting a lure to external malicious 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.ru/pify?keyword=icy+tower+charcters In PDF document text
    • http://files.cwuscasnv.org/uploads/1/3/1/4/131410952/sagewu_newesititin_wogelefulege.pdfIn PDF document text
    • http://files.braverthanthewaves.com/uploads/1/3/1/4/131453807/5359755.pdfIn PDF document text
    • http://files.markkarsten.com/uploads/1/3/0/7/130776609/nanafopisix-kubemen-vuwosikedak-sibanexekudis.pdfIn PDF document text
    • http://files.ucra.us/uploads/1/3/2/6/132681771/7df0b7f646.pdfIn PDF document text
    • http://files.leasparlor.com/uploads/1/3/1/0/131070674/tegapor.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/1/0435/8812/4829/files/furodarugekifajilobow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/68336084530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/array_copy_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/57190816727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/11083369881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9151/6826/files/bovawizenikizuvaxif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2703/8369/files/slacker_premium_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4731/2789/files/zavetaluxiripomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7412/4950/files/pizigulig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/18218670545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7764/8027/files/17344742559.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_off000091e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91E3 4984 bytes
SHA-256: 3501aba5673128195e9253452f997fd13614f77cddccb50a472f989984e64fc9
font_01_sfnt_off0000a2ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2EA 10552 bytes
SHA-256: 8df39c8e23f3dfc764a2c76b3aab0f193d2158b1237b6c293dd8e4c46989671f

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