Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab12670e2ac8fafe…

MALICIOUS

PDF

62.6 KB Created: 2020-08-31 05:01:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e80cac2d7af3fb7cbf9b5be0e6f881d SHA-1: aeb689cbcd345e5fd564d9e32b7122bf9315ffb1 SHA-256: ab12670e2ac8fafe4ec51d947ead5ebacf6fee144b872d06cc8507034b71de03
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to 'sn30 pro manual' and the malicious URL, suggesting a lure. The PDF also hosts a link farm of other PDFs, potentially for SEO poisoning or to spread malicious content. The ML classifier strongly flagged this PDF as malicious.

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.com/wix?keyword=sn30+pro+manual
    • https://cdn.shopify.com/s/files/1/0434/8408/6424/files/15198079921.pdf
    • https://cdn.shopify.com/s/files/1/0433/8611/0110/files/wetidejidukubonejavifero.pdf
    • https://cdn.shopify.com/s/files/1/0433/0042/1790/files/8055714157.pdf
    • https://static.usrfiles.com/ugd/4b874d_82e622bdef514aac84d0b3f9c7df2dca.pdf
    • https://static.usrfiles.com/ugd/b8c837_a76e980b1f39450f951d76a58e35e1f6.pdf
    • https://static.usrfiles.com/ugd/fef806_b6db829f80894275b1c540676d269227.pdf
    • https://static.usrfiles.com/ugd/b8c837_f139695ee2484889a870e9f9d6725a17.pdf
    • https://static.usrfiles.com/ugd/0cd3a8_bd64b04720dc4675ace19175b3a9a365.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c9f39ed0de14c4eb5c44c0f4445f9c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_f6ba4b36a0154c989d0c4a13047bd913.pdf
    • https://static.usrfiles.com/ugd/ac72e0_d76b56b79f4c4bcab84aec2c450f9f95.pdf
    • https://static.usrfiles.com/ugd/b8c837_c20241a9b4ca4ef0952e996806a937c2.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a5e3.bin
619a44e8b5c2a2d3fc0e18259d8022938ad4f8b30552901bc68dc41c3d0f2ef0
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5E3 2880 bytes
font_01_sfnt_off0000b021.bin
87bc5f9d0215ad0df5c5356a322f7b4390381f7961a28f8a5c1a67f43baa2542
pdf-font-stream PDF embedded font (sfnt) at offset 0xB021 5196 bytes
font_02_sfnt_off0000c1a9.bin
d0a52c0d503afb0c1fc4107426b8152ed0c5c50d0e9b8f24167113442a51f497
pdf-font-stream PDF embedded font (sfnt) at offset 0xC1A9 13860 bytes