Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ce84a574cb28fd…

MALICIOUS

PDF

39.4 KB Created: 2020-09-01 13:03:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ab87d501ed50df699d952ea3126c697 SHA-1: 69f9cc36aa85e1d5031fc5b13cd9b96b4e75d0c9 SHA-256: e0ce84a574cb28fd97a127418de3fef7a4bad5f8b747134b494113956a9ff3ab
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.me, which is likely intended to lead the user to a phishing or malware distribution site. The document also contains a large number of external PDF links, many hosted on static.usrfiles.com, suggesting a link farm or SEO poisoning tactic to obscure the malicious destination. The ML classifier strongly supports the malicious nature of this PDF.

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.me/wix?keyword=samhsa+practice+guidelines
    • https://static.usrfiles.com/ugd/314c35_4418af36fb814eacb64103791e2e6b38.pdf
    • https://static.usrfiles.com/ugd/b8c837_3810899ab13e41c395616c2e696c94fa.pdf
    • https://static.usrfiles.com/ugd/48f461_40028b7e29ee48babe1d04e1944e2f75.pdf
    • https://static.usrfiles.com/ugd/66c878_0c90a44d2f554f6e90855364adbbc73e.pdf
    • https://cdn.shopify.com/s/files/1/0461/1476/7012/files/kodesajekevujorali.pdf
    • https://static.usrfiles.com/ugd/78c764_ae162510378b4205826936e09e3f23c0.pdf
    • https://static.usrfiles.com/ugd/b8c837_17533c3230964082bba0a1d4f4ede558.pdf
    • https://static.usrfiles.com/ugd/5fd5c1_7bc3fde5339e4ce8876f2eec6c16afd7.pdf
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/commercial_building_inspection_report_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/4595/2408/files/ravipojexesirimajiraputal.pdf
    • https://cdn.shopify.com/s/files/1/0462/6605/6861/files/justin_bieber_friends_mp4.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_off00005cc6.bin
9fbbc55a6cfe7c37588a4a96c35c155c9f0632815dbacb826508ea8652155ef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC6 5592 bytes
font_01_sfnt_off00006f9c.bin
918baadcec13aa116d3f76caef6ec1f58c90eed7ac96c0c574069c788050b021		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9C 9860 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.