Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c0cceccbf7fc28c…

MALICIOUS

PDF

47.9 KB Created: 2020-08-31 12:55:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea77a1876d95b39b7b3dc652cc83dd70 SHA-1: ee696c1ceb43cd9d16fc6db845ddb9aca43f27a7 SHA-256: 9c0cceccbf7fc28c58550beb92875220ac7a14f8585526ecda32a11bdd7d052c
154 Risk Score

Malware Insights

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

This PDF file contains multiple embedded links, with one pointing to a known malicious redirector at 'https://ttraff.cc/wix?keyword=jason+truck+cap+parts'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of a link farm and the ML classifier's high confidence score indicate malicious intent, likely to redirect users to a phishing or malware distribution site.

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/wix?keyword=jason+truck+cap+parts
    • https://static.usrfiles.com/ugd/e3325f_40aabee045364c97bc448e931eda2261.pdf
    • https://static.usrfiles.com/ugd/d94ae5_ee3dbd6c6509444689dd7d8e2b687770.pdf
    • https://static.usrfiles.com/ugd/dcfb95_1a9efa4b5cf24181815e1a133a0a2d43.pdf
    • https://static.usrfiles.com/ugd/10b11f_3ae7340ba2564150a8b36a557848776e.pdf
    • https://static.usrfiles.com/ugd/96bf9d_b0eaf5de9fff4bed9e9419c14ae97d1f.pdf
    • https://cdn.shopify.com/s/files/1/0432/6886/6214/files/rascal_flatts_bless_the_broken_road.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0141/files/97025348239.pdf
    • https://cdn.shopify.com/s/files/1/0434/5423/4785/files/ielts_simon_listening.pdf
    • https://cdn.shopify.com/s/files/1/0434/2520/2325/files/assembler_des_acrobat.pdf
    • https://static.usrfiles.com/ugd/b8c837_269a3b3abe3447248be6d613939a3cbb.pdf
    • https://static.usrfiles.com/ugd/2f7815_3ec588dac65541bca0dd51b11b19d0e9.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_off00007683.bin
e6e55654a1ccb9bfe6dcb520aeb440be151383735fac291b473ad5af4151b01a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7683 4948 bytes
font_01_sfnt_off0000876d.bin
c8b48cbcbca772fca8aac7cc067cec769ee7c6e5f7f910d80b8cdefe13e457be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x876D 14120 bytes

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