Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecc705b48fe530be…

MALICIOUS

PDF

62.0 KB Created: 2020-08-31 13:58:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dca541fd497b92335047ff2b71bebb6 SHA-1: 3267e164ffcd06d67311d7ca8870aaea7a11142c SHA-256: ecc705b48fe530be4d26bc36bc35aead0574a765c3ba463c8cec224cf62b6e09
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=bangos+ilgis+formul%25C4%2597'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0437/3577/7445/files/71004242408.pdf'. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded malicious URL is the primary indicator of compromise.

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.com/wix?keyword=bangos+ilgis+formul%25C4%2597
    • https://cdn.shopify.com/s/files/1/0437/3577/7445/files/71004242408.pdf
    • https://cdn.shopify.com/s/files/1/0439/9818/3582/files/94910511321.pdf
    • https://cdn.shopify.com/s/files/1/0433/9436/7649/files/tinkers_construct_beheading.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0678/files/panudes.pdf
    • https://static.usrfiles.com/ugd/c75f60_5a69f30077b04c52938bc4cbc992be87.pdf
    • https://static.usrfiles.com/ugd/b8c837_0b85067cdeb548399a006cf4caf3c6a1.pdf
    • https://static.usrfiles.com/ugd/9734e7_d00e78a1132c41bd981ac2abd18cec22.pdf
    • https://static.usrfiles.com/ugd/df73ab_4b71ae5da2d74c34a0e334fc42c35f1d.pdf
    • https://static.usrfiles.com/ugd/fac845_2e89cb0da45547c1b53ae9689ef6f9ff.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/63132841213.pdf
    • https://cdn.shopify.com/s/files/1/0437/2663/5162/files/71391043318.pdf
    • https://cdn.shopify.com/s/files/1/0435/3956/2645/files/algarve_tourist_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/7147/9713/files/zowosulilod.pdf
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/41837426068.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/1/0437/3577/7445/files

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b275.bin
490d9675c083755a386b31bfdab3e6d35fe560b397552c8f60175e0d4ee67d3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB275 5272 bytes
font_01_sfnt_off0000c40b.bin
12065d2c1843fb85b31e40eba6c37243df903cc428a640b74aa3d293c8b2da69		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC40B 12212 bytes

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