Malicious PDF — malware analysis report

Static analysis result for SHA-256 307f788dfac3963a…

MALICIOUS

PDF

44.3 KB Created: 2020-08-31 00:21:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acfe3e5ee978b07c870911436816d186 SHA-1: 2c906d2878eb0c8b49dc8931b80cf84cf98cc170 SHA-256: 307f788dfac3963a72e8a190f5b04d2cb914cc6dd5dda4ede65950e991cbba26
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=revue+technique+peugeot+103+pdf'. This URL is presented within the document body, suggesting an attempt to trick the user into clicking it. The presence of numerous other links, many pointing to benign Shopify URLs, indicates a potential SEO poisoning or link farm tactic to obscure the malicious destination. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.cc/wix?keyword=revue+technique+peugeot+103+pdf
    • https://cdn.shopify.com/s/files/1/0437/4629/5959/files/stewart_calculus_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0437/2620/9175/files/97772609830.pdf
    • https://cdn.shopify.com/s/files/1/0432/7197/9172/files/converter_em_dwg_no_autocad.pdf
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/kanomuxifopogujax.pdf
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/60281790131.pdf
    • https://static.usrfiles.com/ugd/43d598_f91d9231f1a74c1ca1d7c8feede48155.pdf
    • https://static.usrfiles.com/ugd/b8c837_b110cfcaee064105be01a87234f9ce4e.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7378adc4b584a5d90ec85cc30d9aa8b.pdf
    • https://static.usrfiles.com/ugd/b8c837_dd7c2cbe24154071b1c4f85a204a4481.pdf
    • https://static.usrfiles.com/ugd/405339_e496003bff384ef1a4e94b984361451e.pdf
    • https://static.usrfiles.com/ugd/57c819_412e52ca14f04b82af35ecc94e9186c6.pdf
    • https://static.usrfiles.com/ugd/d5d855_b31531a11d9a4c8b946bbead01387d6a.pdf
    • https://static.usrfiles.com/ugd/b8c837_d8353d9a4b014656bbdf633219a8d520.pdf
    • https://static.usrfiles.com/ugd/e4ff69_183fe7ae2833415ea7a79bea2eaa77c3.pdf
    • https://static.usrfiles.com/ugd/628a76_6d1b7c1848284764af37ff9cd7a3a711.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_off00006104.bin
b67eccbf431a8b5a19a25c11be2bdc572c276aef37191bfe4f7a60c874847ba8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6104 5336 bytes
font_01_sfnt_off00007337.bin
985b40433798322da624b00b6401dc01142fd12edc893857e2bbac8b08bf5deb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7337 10420 bytes
font_02_sfnt_off0000965b.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x965B 4324 bytes