Malicious PDF — malware analysis report

Static analysis result for SHA-256 b07b298b987f204c…

MALICIOUS

PDF

37.8 KB Created: 2020-08-29 14:12:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db65cdf1131a9f76bf01d89ae22236a5 SHA-1: 66b76af8c2a7b34d5fec4a8e2ffa07f859d5426f SHA-256: b07b298b987f204c59ce191bd4343ca7207f4b09932cf3a06b92744701acbb1e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a prominent link to 'ttraff.me' which is flagged as a malicious redirector. The document body also contains text related to downloading software ('download dumpper and jumpstart v.30.3'), reinforcing the malicious intent of the link. The presence of numerous other PDF links, many pointing to Shopify, suggests a link farm or SEO poisoning tactic to increase visibility.

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.me/wix?keyword=download+dumpper+and+jumpstart+v.30.3
    • https://cdn.shopify.com/s/files/1/0427/6905/5911/files/ausable_chasm_map.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9027/files/16719001454.pdf
    • https://cdn.shopify.com/s/files/1/0431/7960/6176/files/canciones_para_guitarra_faciles.pdf
    • https://cdn.shopify.com/s/files/1/0436/5913/3081/files/nofekewuzivonelopip.pdf
    • https://static.usrfiles.com/ugd/b8c837_928da8534db641c1a63a7a9cb8334c3c.pdf
    • https://static.usrfiles.com/ugd/b8c837_12918248429a48a5a194bf0ac226cdbc.pdf
    • https://static.usrfiles.com/ugd/b8c837_4894bbb1a51b432d995f3a6f5d64b0ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_e6107023b70e4a7ea57c0ffb23a090bb.pdf
    • https://static.usrfiles.com/ugd/b8c837_54d4cf8d3a224de9b0cee851fed2f3e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_17f319688fd04a3e8dc02396ee577c95.pdf
    • https://static.usrfiles.com/ugd/b8c837_110cdc4e145c43fa81540cfe3486b68b.pdf
    • https://static.usrfiles.com/ugd/b8c837_49aec9fce2f141f186f63bb2d1b46d0f.pdf
    • https://static.usrfiles.com/ugd/b8c837_04864dd79d3f48aba413989b4b18abf4.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_a2a0a96dc0b640dcbf897dcf3e97457b.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82191842179.pdf
    • https://cdn.shopify.com/s/files/1/0439/6243/3694/files/addis_ababa_university_institutional_repository.pdf
    • https://cdn.shopify.com/s/files/1/0430/7868/0727/files/titiloguxa.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_off000054db.bin
bb04f500dd345923f99fbd71e235b2780cb52dbd304949cd58be1dd326812268
pdf-font-stream PDF embedded font (sfnt) at offset 0x54DB 5668 bytes
font_01_sfnt_off0000682a.bin
20b307f7f1a6c2f5ada47a939cb9b4f90c72f956a86ee7a66018cc2445ba45bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x682A 9900 bytes