Malicious PDF — malware analysis report

Static analysis result for SHA-256 560ccb385d4c8039…

MALICIOUS

PDF

44.2 KB Created: 2020-08-12 08:48:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0cf1803be4791b22210b5fcaadbdd76 SHA-1: f3ddc8e333221031b10e5292d0176fba2de066da SHA-256: 560ccb385d4c8039a0c950106963ecd3efdd445bc23e85806527ecea86e814e5
194 Risk Score

Malware Insights

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

The PDF document contains numerous links, with at least one pointing to a known malicious redirector infrastructure at 'https://ttraff.cc/wb?keyword=mahendra%20guru%2010000%20vocabulary%20pdf'. This indicates a phishing or link-farming attempt designed to lead users to malicious sites. The ML classifier also strongly flagged this PDF as malicious.

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/wb?keyword=mahendra%20guru%2010000%20vocabulary%20pdf In PDF document text
    • http://files.mindbusterstrivia.com/uploads/1/3/1/8/131857920/7697937.pdfIn PDF document text
    • http://files.salembrewsupply.net/uploads/1/3/0/7/130740255/073530.pdfIn PDF document text
    • http://files.kercherbiology.com/uploads/1/3/0/8/130814687/4f2d8090f7.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/1/0430/4211/1650/files/market_guide_for_communications_platform_as_a_service.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/rasegok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7884/files/wabovetoton.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9928/1821/files/skmei_watch_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8049/6792/files/64007621834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6289/4498/files/79444668910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3183641906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0978/4482/files/reruxowejulukoribibawasub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0777/8717/files/54670616525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9165/6864/files/laxemutegekirubuvejotaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2553/8973/files/lilokobegarubajawetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7967/1718/files/wodepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6304/9376/files/anatomy_of_earthworm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7778/8057/files/xfdl_to_online_converter.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_off00005d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0D 5740 bytes
SHA-256: 45dec57dd916baeef7a3e749c814b9021a87e2506ea4684bb4edd4b4aa9fd7ce
font_01_sfnt_off0000709c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x709C 9924 bytes
SHA-256: 1c4f8d62d7d3d0b3136689de86d8026a3f8053f1b0af0aef620a230c77eb5f8e
font_02_sfnt_off000092ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92AD 4052 bytes
SHA-256: 47789f527a5f89af1a335ab09a9cb107910613f841434a0c05f0ac778f80dcdb