Malicious PDF — malware analysis report

Static analysis result for SHA-256 2caff85f4556c44e…

MALICIOUS

PDF

44.1 KB Created: 2020-08-05 10:02:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e30c96cbbaa27b1cb1579c47fd3c8588 SHA-1: 81e9f0d7d865b747265f1bdcbc87dafd58327d19 SHA-256: 2caff85f4556c44eb6c381755b9c072cfc61d07a42683af057bd1ddc8924db2c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link that points to a URL designed to lure users into clicking it, disguised as a file converter. The link ultimately leads to 'ttraff.cc', which is known for redirecting to malicious content. The document also contains a large number of external links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning to attract victims.

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.cc/pify?keyword=online+pdf+to+excel+converter+multiple+files In PDF document text
    • http://files.sydneynewhorizons.org/uploads/1/3/2/7/132710787/lozaratorepu_tatira.pdfIn PDF document text
    • http://files.malvern-electrics.co.uk/uploads/1/3/1/6/131637695/4151263.pdfIn PDF document text
    • http://files.davesartdimensions.com/uploads/1/3/1/6/131606348/vojetiborakupo.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/1/0435/9313/8333/files/zosixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7152/0414/files/uninstall_mysql_from_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0499/2408/files/geophysical_survey_for_groundwater_exploration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3672/8734/files/33062964001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6974/2999/files/13384919373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1375/7339/files/48976901989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8359/files/78250685483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/87678583334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/65635902694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9948/0473/files/77934435836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94323725826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/zemutivi.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_off00006f2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2F 5248 bytes
SHA-256: bd5137ef5f06ad839f0d89b4e0b7dea47af7bf5713ba472850d5b90edcfb9208
font_01_sfnt_off00008103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8103 9968 bytes
SHA-256: 1ec1cb77f68698830dbcca7c456465beaba194107bfe04c741ba8990dbc34dcd

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