Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cf711f0f0bb70d9…

MALICIOUS

PDF

53.1 KB Created: 2020-08-14 20:56:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4345168d61edf7d4e1e5808854e71427 SHA-1: 22a92b20fdb8f05f55a46ef995c2763c4d2bce01 SHA-256: 3cf711f0f0bb70d9e9c7e8ec0953afbd086b8d31bf2f324f91bbb0d463662c70
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing for a PDF link farm. One of the URLs, 'https://ttraff.com/wb?keyword=heterocyclic%20amines%20pdf', is flagged as a malicious redirector. The document body itself is heavily obfuscated but contains this URL, suggesting the primary purpose is to redirect users to malicious infrastructure, potentially for phishing or malware distribution.

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/wb?keyword=heterocyclic%20amines%20pdf
    • http://bolodisu.theyorksociety.com/uploads/1/3/2/8/132814930/1907972.pdf
    • https://cdn.shopify.com/s/files/1/0434/0862/1719/files/types_of_broadcast_receiver_android.pdf
    • https://cdn.shopify.com/s/files/1/0436/1761/6034/files/63630238729.pdf
    • https://cdn.shopify.com/s/files/1/0430/7802/5377/files/bofulu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3486/1987/files/general_mathematics_textbook_grade_11.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/wosimarusisomewulenir.pdf
    • https://cdn.shopify.com/s/files/1/0433/0386/2440/files/vefamomal.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/17342669025.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65925238695.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tulajemo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8827/2807/files/work_experience_certificate_format.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/mitoge.pdf
    • https://cdn.shopify.com/s/files/1/0434/3857/1670/files/valedixuj.pdf
    • https://cdn.shopify.com/s/files/1/0440/0558/9157/files/90081989204.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_off00009267.bin
7b34fd82eefee5e7f304fd8394310517cb67f7fe41371becd52173f39934d656		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9267 5364 bytes
font_01_sfnt_off0000a493.bin
8b0a5731455549918067d7b0c28347e5d0322da64464b7d5e2b968104eeedad8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA493 10356 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.