Malicious PDF — malware analysis report

Static analysis result for SHA-256 8292e36e2ccd49b1…

MALICIOUS

PDF

44.3 KB Created: 2020-08-14 05:48:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 38d559fcaaf9c8d85952ea21830c6499 SHA-1: 7a645f31f0d525734123bda0bdfa2e23abffcf9a SHA-256: 8292e36e2ccd49b1a61b683b7bce4383c4c18dd4b7fca74d8d8cb0ddd1a70e84
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=mahalaxmi+calendar+april+2019+pdf+free'. This redirector is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains similar URLs and the authoring application suggests it was generated programmatically, consistent with SEO spam or phishing lures.

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=mahalaxmi+calendar+april+2019+pdf+free In PDF document text
    • http://xusiw.mutchlerproperties.com/uploads/1/3/1/0/131070874/migil.pdfIn PDF document text
    • http://files.mentorsmatter.us/uploads/1/3/1/1/131164479/f8f738384.pdfIn PDF document text
    • http://files.nmwordprocessing.com/uploads/1/3/0/8/130874252/xapeminofafaf-vuxijoninis-kejetopo.pdfIn PDF document text
    • http://files.stonehedge.us/uploads/1/3/2/3/132303041/48518f95f59f.pdfIn PDF document text
    • http://files.uvoholicsanonymous.com/uploads/1/3/0/8/130874633/zejobujimikevogula.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8055/5419/files/naripokaxupuvuxojububoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6628/4446/files/72299796548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5393/0904/files/84648542776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8697/8984/files/56445891455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/59753790324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6196/7013/files/thesis_on_agricultural_extension_and_rural_development.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vofekofunore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/vascular_anatomy_of_the_brain.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2216/1832/files/36020381053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1102/9666/files/68962331385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/30328886626.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5006 5772 bytes
SHA-256: 434c6deaf91c17bd20ed3d679d5aa3f07508facb8ca16ae904f8dac6b9957d57
font_01_sfnt_off0000638c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638C 9648 bytes
SHA-256: 3b5726b127cfacde1c3aabd16290edc680afce53034f9e805bb6aa9b81ecb1e2
font_02_sfnt_off000084cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84CB 9268 bytes
SHA-256: c4caa31faf06bc736c2771c2a9bde31376524606673c5bfa9ece6bed036244ef