Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfe9e9b5b56edc25…

MALICIOUS

PDF

56.5 KB Created: 2020-08-14 19:42:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d16b14f77a124cf0bf3032c57ca19091 SHA-1: eddfeeab0b88834b53d6a0f71e3a3e3c57dbd384 SHA-256: dfe9e9b5b56edc2572de78fc561a997789cce8cd6cce9ad2f46ee74c7cacca14
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.cc/pify?keyword=rahat+fateh+ali+khan+songs++pagalworld'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of a link farm heuristic further indicates a coordinated effort to distribute malicious content.

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.cc/pify?keyword=rahat+fateh+ali+khan+songs++pagalworld
    • http://zarerobox.lancasterbaptistchurch.org.uk/uploads/1/3/0/7/130738848/c46d16ca.pdf
    • http://mafagijuj.timandlorimissions.com/uploads/1/3/2/3/132303374/af02b8c.pdf
    • http://fawaba.ajsaunders.com/uploads/1/3/2/7/132712380/diwikulegob_palizetu.pdf
    • http://files.pathlightwisdom.com/uploads/1/3/1/8/131871633/c17c68d1aee5ed.pdf
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/96714223388.pdf
    • https://cdn.shopify.com/s/files/1/0434/8067/8557/files/apocalpticos_e_integrados_portugues.pdf
    • https://cdn.shopify.com/s/files/1/0432/9691/5621/files/cbse_guidelines_for_class_12_2020.pdf
    • https://cdn.shopify.com/s/files/1/0437/3010/8577/files/68571960058.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fonufefijosogigu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/bol_bam_2019_ka_gana.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0741/files/sociologie_politique_l_action_publique.pdf
    • https://cdn.shopify.com/s/files/1/0432/5684/0354/files/digimon_world_rom.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/ecological_relationships_worksheet.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008e26.bin
00d07a21382a776f01850b1408e9063124f4f07d718c2976fbd449970e69e9f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E26 5464 bytes
font_01_sfnt_off0000a0d3.bin
33e12ac6d1664c46a5064bd820f08b7ae1f86a502ccb33005561f8f684feda16
pdf-font-stream PDF embedded font (sfnt) at offset 0xA0D3 16068 bytes