Malicious PDF — malware analysis report

Static analysis result for SHA-256 a40af6b750ff9240…

MALICIOUS

PDF

42.3 KB Created: 2020-08-30 21:16:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48e424351c7d283e55d4a4643d49a7ae SHA-1: 12cf9b43920c1e6d56ee87c4303c5e49df66bb33 SHA-256: a40af6b750ff9240e0504cd575ce3eabaa8fedd05b7c1d78a21c503525080b5f
120 Risk Score

Malware Insights

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

The PDF file contains a prominent link to 'ttraff.com' disguised with a keyword related to music downloads, indicating a social engineering lure. This URL is flagged as a malicious redirector. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, suggesting an attempt to manipulate search engine results or distribute further malicious content. No scripts were extracted, but the primary attack vector appears to be the malicious redirector link.

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.com/wix?keyword=2pac+music+download+mp3+free
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/nodejs_buffer_concat_performance.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/63545483179.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/42312916162.pdf
    • https://cdn.shopify.com/s/files/1/0432/9255/7462/files/85762995438.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_e694c9a8db094db890c14ccf5c3d9fe6.pdf
    • https://static.usrfiles.com/ugd/575363_f4f9cae1651b4d17a6de97e7ac42fbe8.pdf
    • https://static.usrfiles.com/ugd/d1c05f_ad1707dce1374bc4bdc82da7078527de.pdf
    • https://static.usrfiles.com/ugd/d1c05f_895c479a2ee4424886083a8f1f1a55a3.pdf
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/jaralutasuv.pdf
    • https://cdn.shopify.com/s/files/1/0437/3518/7605/files/hp_1320_driver.pdf
    • https://cdn.shopify.com/s/files/1/0433/2496/5019/files/musapelusatexedowi.pdf
    • https://cdn.shopify.com/s/files/1/0463/2477/7117/files/evidence_for_evolution_worksheet_ans.pdf
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/lalesakuto.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_off00006685.bin
a0325db1fba65ea02cc22ed617e96f7f92b55ad9ea5276c941db9319443e7412		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6685 5592 bytes
font_01_sfnt_off00007978.bin
521d2ac469f049c24663ae3d430e15d19ee9dc96b0648cc734b201b3529ed103		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7978 10316 bytes

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