Malicious PDF — malware analysis report

Static analysis result for SHA-256 adbf85c2cd3c8d99…

MALICIOUS

PDF

80.9 KB Created: 2020-08-10 18:41:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 863684fb50c8a8626e2787fa4ede19da SHA-1: 4eee4a99e1a00c4c347ca536fa9e2256e6a94497 SHA-256: adbf85c2cd3c8d9937e0254d4a6228d3feb9f8b588d426ef6315ad6f8fea6c3f
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. It also exhibits a PDF link farm behavior, with numerous links pointing to external PDFs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a 'download button' heuristic further supports the lure mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=types+of+screw+threads+and+their+applications+pdf In PDF document text
    • http://files.dvrgeclothing.ca/uploads/1/3/2/6/132695294/2329e5a732.pdfIn PDF document text
    • http://files.ascdmo.org/uploads/1/3/0/9/130969172/vowow.pdfIn PDF document text
    • http://files.meaganhesham.ca/uploads/1/3/0/9/130969218/4591974.pdfIn PDF document text
    • http://files.motivelove.com/uploads/1/3/1/4/131408056/01a156e67720.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/1/0432/2407/2349/files/clinical_data_interpretation_in_anaesthesia_and_intensive_care.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89462818099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/difobanejosirof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44329390643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50306279194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5278/5055/files/rujam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4535/5682/files/49165066412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7948/9950/files/awakening_the_giant_within_by_anthony_robbins.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3678/7356/files/wilton_drill_presses.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e86e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE86E 5384 bytes
SHA-256: 9b455f4d3334776ab7f2db3dff5cf1c43ef3e91a6f04933b605244875d2a24ce
font_01_sfnt_off0000fad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD1 11264 bytes
SHA-256: 16b0974ea4256276fe2e202b8795e1efc1ff91425e12fc5229f1736e45153df8
font_02_sfnt_off0001209e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1209E 16172 bytes
SHA-256: 852e0d6ce07a1db2e11154f4548aec4dc29a2cf073112f8b6a2b4be1be4894b3

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