Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b69a8db5657f82…

MALICIOUS

PDF

50.9 KB Created: 2020-09-04 18:55:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c85b2dd4e3b8350329a77fbe41f67684 SHA-1: 415f2c52504bcf58b135420e70e5ae7b5b46083c SHA-256: d0b69a8db5657f826f0b9fcddb82b8016eb5d30aa29d5512ff8253c80109ffdd
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.club'. This URL is likely part of a phishing or malware distribution chain. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to 'static.usrfiles.com'. While the document body is heavily obfuscated, the presence of the malicious redirector URL is the primary indicator of malicious intent. 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.club/wix?keyword=blightfall+botania+guide
    • https://static.usrfiles.com/ugd/b8c837_2efc665bfc4e40a38281da6a5ea54fe8.pdf
    • https://static.usrfiles.com/ugd/436160_1b7e7ca028744f1abc09909f811a0f0d.pdf
    • https://static.usrfiles.com/ugd/0aab01_a06299c847bf4996ad2a1def120e9341.pdf
    • https://static.usrfiles.com/ugd/136d3d_1275ffc6fa0d47c0a412778f92acda5b.pdf
    • https://cdn.shopify.com/s/files/1/0432/1096/5147/files/broadsheet_sydney_after_work_drinks.pdf
    • https://cdn.shopify.com/s/files/1/0431/8386/6007/files/domuwatefebu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0632/7957/files/13165521879.pdf
    • https://cdn.shopify.com/s/files/1/0437/9885/5837/files/firunuriwesotolunan.pdf
    • https://static.usrfiles.com/ugd/b8c837_29722c605d6244a189447036c365eea1.pdf
    • https://static.usrfiles.com/ugd/9d869b_f92d7f0e52c243b5b8bb7627b6a8609b.pdf
    • https://cdn.shopify.com/s/files/1/0432/8911/6836/files/7275679057.pdf
    • https://cdn.shopify.com/s/files/1/0437/1264/3227/files/lanogigabokid.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_off00006fa5.bin
64c2934afedb0c630d703d3cf934026ee26bfccf301b131b17802526eea85e8b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA5 5084 bytes
font_01_sfnt_off000080e8.bin
6162bde909b3a0d42180e0d8c5ac9902609609a28b09ce444156a75ece4494ef
pdf-font-stream PDF embedded font (sfnt) at offset 0x80E8 8916 bytes
font_02_sfnt_off000099ec.bin
a916e5498d807138f9a99b862b6d9f0bcd3c3ad0c94777ccdc0d2a9a4cefa9e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x99EC 10724 bytes