Malicious PDF — malware analysis report

Static analysis result for SHA-256 649d9fb3a2e1bee4…

MALICIOUS

PDF

51.5 KB Created: 2020-08-31 04:13:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d3bce3004e476609ee4a7da9cc8b6eb SHA-1: 3f1d3e2f8199df4ec4136ad7cb3c1fe19b2cd402 SHA-256: 649d9fb3a2e1bee4cdf4fb852173b675725295049db49658212440b6e5952e30
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Elite dangerous passenger transport' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous external PDF links further indicates a link farm or SEO poisoning attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/wix?keyword=elite+dangerous+passenger+transport
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/ec0c41_b5a751631240455fb0da0ed0366d0762.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_68d9bbd0d84c46bc893557a0434ce6ed.pdf
    • https://static.usrfiles.com/ugd/b8c837_a8ad3ecf65584627bc5e3562a191cc8c.pdf
    • https://cdn.shopify.com/s/files/1/0436/2862/6080/files/gituwakufitap.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/mujeruzaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/0818/0895/files/the_cultural_landscape_12th_edition.pdf
    • https://static.usrfiles.com/ugd/dcfb95_507cad7bee5e40818243a7955973e001.pdf
    • https://static.usrfiles.com/ugd/b8c837_cfc2266b12354d6bb593e96dbaea740c.pdf
    • https://cdn.shopify.com/s/files/1/0439/8150/4670/files/rofinobagozep.pdf
    • https://cdn.shopify.com/s/files/1/0428/5353/1807/files/faxoxaxizawomolirudoni.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006be6.bin
846994251c63b0940d33ebfac35b54f106f3685338f5ddec66a7298d8ff8e491
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE6 5084 bytes
font_01_sfnt_off00007d30.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D30 1800 bytes
font_02_sfnt_off000085bd.bin
07bf72d80c4dfa685466103c1096a1261613f78644d5a6a972cd7c9c5cb654f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x85BD 10876 bytes
font_03_sfnt_off0000aac8.bin
975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15
pdf-font-stream PDF embedded font (sfnt) at offset 0xAAC8 16312 bytes