Malicious PDF — malware analysis report

Static analysis result for SHA-256 5db16fb08e35c91e…

MALICIOUS

PDF

90.6 KB Created: 2020-07-31 16:43:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cedfb854572c3f007171f68a1509ade0 SHA-1: 32fc9cb70b7340fda72d7a3e46eb59cb0f3c0df1 SHA-256: 5db16fb08e35c91e4cc11608c2a90451672132d3f1af5b789d5445972b90e8a8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it's a malicious redirector, specifically linking to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary purpose is to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

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=tinkers+construct+fractured In PDF document text
    • http://files.24-7totalfitnesscenters.com/uploads/1/3/1/0/131071231/bec2c11b1cdb6.pdfIn PDF document text
    • http://files.vertsdispensary.com/uploads/1/3/0/8/130813146/bunopiwiduwe.pdfIn PDF document text
    • http://files.clearriverredangus.com/uploads/1/3/1/4/131453198/2c28d4a3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5693/8664/files/76078424571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8910/0957/files/ritil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9142282406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2150/8509/files/susitajuzinirazoxoxos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/vabonuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6083/0116/files/sesozewafizesikafabutemej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0124/9955/files/bajidudajorowig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zobuwavidojanunixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6990/6844/files/75792824796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0497/6548/files/kejunifudodik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9938/0130/files/numekajigitomegibepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zutowujovepenatugipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3470/6083/files/dikajujosenediwepananopib.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 4

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_off000119e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E5 4880 bytes
SHA-256: c81cac3a46d7c95450c7fb77b2a031abce631ad6c75b4fe8dc7555dd6f8e776e
font_01_sfnt_off00012a7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A7E 10724 bytes
SHA-256: 86a6d252a51f5ed29c9b523a4c747b38a8cabc14849680dcbaa106db936ceb57
font_02_sfnt_off00014f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F19 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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