Malicious PDF — malware analysis report

Static analysis result for SHA-256 d33a965591e2f207…

MALICIOUS

PDF

44.5 KB Created: 2020-08-30 15:53:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2e0705b26f2c010f5ae5079105ea2e2 SHA-1: f7ff7f7e1e76068790dd971fc1bad5646e4dcdfb SHA-256: d33a965591e2f20706b23dbbcf2fd304eeff3ca5058c889303a7112b8d126dd8
152 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=fetih+suresi+arap%25C3%25A7a+dinle+mehmet+emi'. This URL is likely used to redirect users to a malicious site for phishing or malware delivery. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of a large number of external PDF links also indicates a link farm, often used to obscure malicious destinations.

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=fetih+suresi+arap%25C3%25A7a+dinle+mehmet+emi
    • https://static.usrfiles.com/ugd/576447_68adc395ebd7458e905abacde1a36cbb.pdf
    • https://static.usrfiles.com/ugd/8de238_ade707d23e4f492ba01da48f275f4f8e.pdf
    • https://static.usrfiles.com/ugd/18f527_e648805552484ac2a5de3e55edf85795.pdf
    • https://cdn.shopify.com/s/files/1/0434/1419/2284/files/logitech_keybaord_disable_tap_to_click.pdf
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/naviwi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/camden_council_recycling_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0428/3973/6487/files/79135185635.pdf
    • https://static.usrfiles.com/ugd/b7ed05_bfd6ecc47c2b4632bd7a95aa9f72533b.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad319baeaa3f4a14b46fe1e02621a7ea.pdf
    • https://cdn.shopify.com/s/files/1/0438/9978/1275/files/wedding_march_easy_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/dispute_your_transunion_credit_report.pdf
    • https://cdn.shopify.com/s/files/1/0441/1306/8184/files/87617363510.pdf
    • https://cdn.shopify.com/s/files/1/0430/1419/3311/files/28476642686.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/
    • https://cdn.shopify.com/s/files/1/0438

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d18.bin
8240f4c004e0d39e35849f67458602ea3784b1bd9784835929d560207e258462
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D18 5336 bytes
font_01_sfnt_off00007f07.bin
683a536f20ee9f4cd0474d2bdcd47a8336260f72be2708ccb26848805bdde65b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F07 11492 bytes