Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1367fc515bd2d4…

MALICIOUS

PDF

41.4 KB Created: 2020-08-24 01:42:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f9912c31300ee25e60f38ae27331e54 SHA-1: e7bce014bbc37bf90ec298191bfd825ddee0293a SHA-256: 2f1367fc515bd2d43f6544bb225ee9a025f4ff1de17ca2c305fec541c0fd8736
120 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/pify?keyword=2019-+20+monthly+calendar+template'. This URL is embedded within the document's content, disguised as a calendar template. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The primary malicious intent appears to be redirecting users to potentially harmful content via the ttraff.cc domain.

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/pify?keyword=2019-+20+monthly+calendar+template
    • http://files.kristiemariecounseling.com/uploads/1/3/0/8/130814288/9957074.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/lumawawegavosuzokigi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/capacitor_size_calculator_for_motors.pdf
    • https://cdn.shopify.com/s/files/1/0464/0243/7275/files/20612390574.pdf
    • https://cdn.shopify.com/s/files/1/0428/5438/3782/files/incentive_policy_format.pdf
    • https://cdn.shopify.com/s/files/1/0429/8424/3363/files/what_was_missing_adventure_time.pdf
    • https://cdn.shopify.com/s/files/1/0429/7631/3503/files/mejuzi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7098/8188/files/rofokuge.pdf
    • https://cdn.shopify.com/s/files/1/0434/0790/0835/files/xitavoka.pdf
    • https://cdn.shopify.com/s/files/1/0437/8794/4094/files/68560709167.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/1/0438/5452/8677/files/lumawawegavosu

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006226.bin
00077a3185018de58693392bb77d888676dd9165efef83d0dff45b9dff9dbec6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6226 5656 bytes
font_01_sfnt_off00007533.bin
8f7bb75cc90e1463245676c42b6e0ba95604dbef057d4538667bcbe2de7035ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7533 10364 bytes

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