Malicious PDF — malware analysis report

Static analysis result for SHA-256 284d644271541ced…

MALICIOUS

PDF

38.4 KB Created: 2020-08-29 20:11:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d221dd817d4f4b9e12976baa522579f3 SHA-1: 900fcaad0969e3e01647c9f76f34eba30670eab5 SHA-256: 284d644271541cedb74da4128b8236678b30a6ebd3c11a87090f87ef55d7cc5d
152 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. The primary malicious indicator is a link to `https://ttraff.link/wix?keyword=taliyah+jungle+guide+pro`, which is identified as a known malicious redirector. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or malware distribution.

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.link/wix?keyword=taliyah+jungle+guide+pro
    • https://cdn.shopify.com/s/files/1/0428/6509/8908/files/38040239902.pdf
    • https://cdn.shopify.com/s/files/1/0431/4333/2000/files/31386028315.pdf
    • https://cdn.shopify.com/s/files/1/0435/9349/8787/files/holt_sociology_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/larefevokedidowos.pdf
    • https://cdn.shopify.com/s/files/1/0434/6717/8134/files/5759501109.pdf
    • https://cdn.shopify.com/s/files/1/0440/0830/8886/files/51618068068.pdf
    • https://cdn.shopify.com/s/files/1/0462/2444/1498/files/81297749955.pdf
    • https://cdn.shopify.com/s/files/1/0431/4130/0380/files/sipokarel.pdf
    • https://static.usrfiles.com/ugd/b8c837_c24c944a9cb046c1acfeb53a213222cb.pdf
    • https://static.usrfiles.com/ugd/b8c837_a8cfe8325a9a4ed59c2a6af40d7704f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_cad9da7fa409402b9399a38ecaa6359b.pdf
    • https://static.usrfiles.com/ugd/3e5d97_c64346146471413f8e1064430672b752.pdf
    • https://static.usrfiles.com/ugd/b8c837_1107cff6c33844f5a82bf5b9e8e08998.pdf
    • https://cdn.shopify.com/s/files/1/0431/0050/4217/files/retirement_party_flyer.pdf
    • https://cdn.shopify.com/s/files/1/0432/3767/1075/files/jebezenofisusa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/58751783053.pdf
    • https://cdn.shopify.com/s/files/1/0435/5971/4971/files/asking_for_help_social_skills_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/zesaboveruxo.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_off00004f59.bin
46891df3b30bf677d7a8fedab432f590cda510c8954d8553019cb70e546053dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F59 5168 bytes
font_01_sfnt_off000060e9.bin
12ee2f6776c12c1c2a7e546fab93cd85372b08ef8f3608c17d7528ea90480a10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60E9 14256 bytes

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