Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f08ae2448724d03…

MALICIOUS

PDF

35.6 KB Created: 2020-08-18 15:16:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3122f309669efdbcdaf3658a3a21dc84 SHA-1: d007fd2ee90a7511d7b915162f799c275b526468 SHA-256: 6f08ae2448724d03547f9258bd8fa84af7a192643c83b3c059c78017cfad139c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector. One prominent URL, 'https://ttraff.com/pify?keyword=abcd+tamil+movie+bgm+free', is directly linked to malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to trick users into visiting potentially harmful sites under the guise of movie-related 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.com/pify?keyword=abcd+tamil+movie+bgm+free
    • http://files.cameronbertrandvip.org/uploads/1/3/0/7/130776058/1b24d87.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/8921/3093/files/8398631187.pdf
    • https://cdn.shopify.com/s/files/1/0429/3882/6908/files/gejosodezamopol.pdf
    • https://cdn.shopify.com/s/files/1/0431/7157/8024/files/65225367291.pdf
    • https://cdn.shopify.com/s/files/1/0430/8615/1833/files/xegaxepevajubus.pdf
    • https://cdn.shopify.com/s/files/1/0428/7394/6275/files/97402353352.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/womigiwakeboli.pdf
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/nikabim.pdf
    • https://cdn.shopify.com/s/files/1/0430/3765/5193/files/kakotola.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046b0.bin
0272b66c2728b0cbdd89a34ee3efb9d81930b629b2bf108ce08cfb4e3af367a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46B0 5352 bytes
font_01_sfnt_off000058d6.bin
6ce37f4a1025b3c59829b368e79f3aeb3e77637e53f66d5ab5f70d3696ed5a31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58D6 13308 bytes

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