Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fdc4c2dcec71522…

MALICIOUS

PDF

40.0 KB Created: 2020-08-09 03:46:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 068722fbc9ea58d111226521031dd8ed SHA-1: c1efff9b8528bb1626bb8633f55aeacfcceaea56 SHA-256: 8fdc4c2dcec71522e13a7742314c9508b8659fbd110821aea76f32e86e5c07f8
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though partially corrupted, contains the same malicious URL, suggesting the primary intent is to redirect the user to malicious infrastructure. No scripts were extracted from this sample.

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/pify?keyword=coordination+agility+and+speed+training+for+soccer+pdf
    • http://files.brendanswallace.com/uploads/1/3/0/8/130873945/lofera.pdf
    • http://files.selfadvocacyandstrength.org/uploads/1/3/2/6/132681694/195ce.pdf
    • http://files.foresthillpiqua.com/uploads/1/3/1/8/131871705/vixipunutedejo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1029/files/73282486312.pdf
    • https://cdn.shopify.com/s/files/1/0430/4902/5690/files/zoxinumitug.pdf
    • https://cdn.shopify.com/s/files/1/0434/1134/1479/files/94096252164.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/tuxuxexamatoragokib.pdf
    • https://cdn.shopify.com/s/files/1/0428/5169/6796/files/navneet_books_online.pdf
    • https://cdn.shopify.com/s/files/1/0431/5771/7143/files/sugenavojezurujobixarerig.pdf
    • https://cdn.shopify.com/s/files/1/0435/2249/0528/files/download_to_excel_converter_full_version_crack.pdf
    • https://cdn.shopify.com/s/files/1/0438/0576/9888/files/32399424313.pdf
    • https://cdn.shopify.com/s/files/1/0434/3654/0069/files/57835362210.pdf
    • https://cdn.shopify.com/s/files/1/0433/7297/0133/files/wubikevofi.pdf
    • https://cdn.shopify.com/s/files/1/0438/3290/1789/files/9491962141.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_off00005e24.bin
0861e34a3f45821ac7d63b05b297291e7358c31eae646d4038c83e00f073ac9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E24 5328 bytes
font_01_sfnt_off0000705d.bin
2831e29f4c565649b5831953e83448ce99ddc438a7e50ff2b002af084a992367		 pdf-font-stream PDF embedded font (sfnt) at offset 0x705D 10204 bytes

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