Malicious PDF — malware analysis report

Static analysis result for SHA-256 e88dceeddb97dda2…

MALICIOUS

PDF

41.3 KB Created: 2020-08-08 04:40:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ba23bfc2bd2c3185b5348a356310ab31 SHA-1: 71b59d3dc405f097ee9a85cb8699a5ca61d04fd6 SHA-256: e88dceeddb97dda218b686281a14c51c82726a9b27bb7348357e7d1721862e1b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text that appears to be a title related to mathematical formulas, likely a lure. The PDF also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or to obscure malicious destinations. The primary malicious IOC is the redirector URL.

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=all+formulas+of+ap+gp+and+hp+pdf In PDF document text
    • http://files.lancasterlimo.net/uploads/1/3/1/3/131378899/tuwulaxobubub.pdfIn PDF document text
    • http://files.doggiedashabout.com/uploads/1/3/1/6/131636834/xomutupituw_xabunevawukag_julimibuvigotog_paxojezijufisif.pdfIn PDF document text
    • http://files.benoitfarmsandlivestock.com/uploads/1/3/2/7/132740185/tukuzukor-vuragodinamo-mepazigide.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/1/0431/2717/7380/files/niloduxumiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/mejomotazoxuruziguj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4267/6636/files/16109294541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4637/0471/files/wadomak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/pifezalofenidusasepadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2231/7728/files/92595430881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7686/8504/files/58002386315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6192/6293/files/wasiripejeniju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/pezuzudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/gogefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4473/2065/files/jizoladufarafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6518/0314/files/38799286802.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 3

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_off000062b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B3 5444 bytes
SHA-256: 8955223890ec60e1de29e2f16022bc4e217c161872cc873233cc11ffbc037442
font_01_sfnt_off00007505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7505 10324 bytes
SHA-256: 180f6dcf6286c0fd5da5a57502d59c93086e655c728c9663cb4644c06e975557

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