Malicious PDF — malware analysis report

Static analysis result for SHA-256 82ed9dc795b8612b…

MALICIOUS

PDF

41.9 KB Created: 2020-10-07 16:05:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23f14ccb58be862c05d2a872d8b83b87 SHA-1: 1ba2fd52559b452ebf4409b724ac271eb3206b33 SHA-256: 82ed9dc795b8612bd039fdb7d366d9605256d65704b837fad17f9accf8ab72c6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as information on hacking mobile games. The ML classifier strongly indicated maliciousness, and the document body includes multiple URLs pointing to potentially malicious PDF files, suggesting a link farm designed to distribute malware or lead to phishing sites. The primary malicious URL is ttraff.link, which redirects to content related to 'how to hack asphalt 8 android lucky patcher'.

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.link/pify?keyword=how+to+hack+asphalt+8+android+lucky+patcher
    • http://files.keebskorner.com/uploads/1/3/1/4/131437018/gunovilivax_zukuzaguteveto_kefususopubom_wifibokedoteje.pdf
    • http://files.foreststreetps.com/uploads/1/3/1/3/131379692/divoputujuzilinalax.pdf
    • http://mamevaj.hangupscompany.com/uploads/1/3/2/6/132682006/f37073886e.pdf
    • http://files.oportunityisknocking.com/uploads/1/3/2/7/132740204/mokogagewutizir_japupitimolugob_jazepedumefuta_mulesagubelek.pdf
    • https://site-1040876.mozfiles.com/files/1040876/watedebof.pdf
    • https://site-1036680.mozfiles.com/files/1036680/migadanojiji.pdf
    • https://cdn.shopify.com/s/files/1/0485/0185/0273/files/gillette_fusion_manual_blades_-_8_cartridges.pdf
    • https://uploads.strikinglycdn.com/files/4cf79fa9-252b-46dc-8a04-8a604b04f97e/6199713452.pdf
    • https://uploads.strikinglycdn.com/files/e668ce94-803c-4ea5-96fe-c35e8b4b4986/49732108597.pdf
    • https://uploads.strikinglycdn.com/files/7bfd35d3-e1a1-44c6-b00f-3b99691ce0ae/93473700609.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_off0000621b.bin
e718845143a41301994bdea922b2ad65d84712232b0fc7df54e79cb3765c2fe0
pdf-font-stream PDF embedded font (sfnt) at offset 0x621B 5576 bytes
font_01_sfnt_off0000751e.bin
e150095ee415b3f5d76c8f49f88fcc3d8472cb7704a0b3bd28b4ead9c19af7bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x751E 11244 bytes