Malicious PDF — malware analysis report

Static analysis result for SHA-256 66086985b651f7a1…

MALICIOUS

PDF

52.9 KB Created: 2020-08-30 19:12:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52b289f23c5fd3a38809f729a61bf791 SHA-1: 0fd7b720553014ee4111d26efea02ff6653a2a98 SHA-256: 66086985b651f7a1c149b9c611c5cba71ba5a1ffdd1828606253f7e1cac99e62
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one identified as a malicious redirector. The ML classifier also flagged the document as malicious. The primary malicious URL identified is https://ttraff.com/wix?keyword=panamera+gts+price, which is likely used to redirect users to further malicious content or phishing pages. The presence of a link farm suggests an attempt to generate traffic or distribute content through multiple external PDFs.

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=panamera+gts+price
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_d17db36ffd7a4e5c8cbb7c4f97faa918.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf2b371bcc72483caeeb6e56aeef2e0a.pdf
    • https://static.usrfiles.com/ugd/01e791_95d5d02161944ca2b4fbffb25197c016.pdf
    • https://cdn.shopify.com/s/files/1/0434/8697/0021/files/fasoxutolojunativufo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/37708013654.pdf
    • https://cdn.shopify.com/s/files/1/0434/4614/1093/files/16022744229.pdf
    • https://cdn.shopify.com/s/files/1/0429/5789/7882/files/15659961508.pdf
    • https://cdn.shopify.com/s/files/1/0437/7165/8392/files/84826010358.pdf
    • https://cdn.shopify.com/s/files/1/0433/4655/9127/files/flagelos_bacterianos.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/35399541051.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5197/files/faliximugepisif.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e96.bin
224444a774b1ca48fbea89e56c634aeab397f9f4fd27f00f6cfe0c299b7171a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E96 5220 bytes
font_01_sfnt_off0000803d.bin
44470453d5ca517bdfb760b49c8971afb120fc2aa8cb73e3aeae91c43fe061c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x803D 15180 bytes
font_02_sfnt_off0000afab.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6
pdf-font-stream PDF embedded font (sfnt) at offset 0xAFAB 16164 bytes