Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f17be59a5181f03…

MALICIOUS

PDF

59.0 KB Created: 2020-08-29 07:24:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1bbebb112946cb086ed5b419a8b1a737 SHA-1: ac8801d57ab6e653a94c5f51e97cc5e92feaccae SHA-256: 2f17be59a5181f03288c2e60d3e3a6b97e5d4c38046256b2e4f2bb5440abcc8d
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead users to a malicious site. Additionally, the document exhibits characteristics of a PDF link farm, embedding numerous external links, predominantly to static.usrfiles.com, suggesting an attempt at SEO manipulation or a broad distribution of potentially harmful links. No scripts were extracted from this sample.

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=tc+helicon+voicelive+2+manual
    • https://static.usrfiles.com/ugd/b8c837_7bc36a9f5104486ca7fc52d0f3f10884.pdf
    • https://static.usrfiles.com/ugd/b8c837_1090561acb51407e9a75fb0299b9f7d8.pdf
    • https://static.usrfiles.com/ugd/b8c837_eede3ab716d54fe9b473468c1b025f2a.pdf
    • https://static.usrfiles.com/ugd/b8c837_9badf7fb0ffd40e79498412c81767ac0.pdf
    • https://static.usrfiles.com/ugd/b8c837_e0ec9d01b5224ac2b0db595c21313d7c.pdf
    • https://static.usrfiles.com/ugd/b8c837_17312a22054b406fa5f23c80b24b4e05.pdf
    • https://static.usrfiles.com/ugd/b8c837_886c79b0d0ea46f991cd3efe39c99d4e.pdf
    • https://static.usrfiles.com/ugd/b8c837_6b8d4db34fb94d73a78dfc389e551d89.pdf
    • https://static.usrfiles.com/ugd/b8c837_641597aefc2c4c928a52d6f2afefb707.pdf
    • https://static.usrfiles.com/ugd/b8c837_d20b110532c74c6eb7e66faf85c44d35.pdf
    • https://static.usrfiles.com/ugd/b8c837_8d33dfcc10a846b6a6a1f7ad882374ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_b3cfd369d4984ce287596046df8134a0.pdf
    • https://static.usrfiles.com/ugd/b8c837_2834814971b8414ca577aa28b115deb1.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_off00009ac3.bin
7e77b737698a2e362edc2bef3fd19889e98856b7dfae6afa6b23705c7df589c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x9AC3 4708 bytes
font_01_sfnt_off0000aa86.bin
fe4cc5f3f0c8ecc21ec451abf40d17cc92afabad1434f24ac23e648b096c17c6
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA86 11452 bytes
font_02_sfnt_off0000d11f.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xD11F 4324 bytes