Malicious PDF — malware analysis report

Static analysis result for SHA-256 7734a8cc9250d4ea…

MALICIOUS

PDF

39.0 KB Created: 2020-08-20 07:48:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a54d5676ed652fb3fe8d8c90975aa387 SHA-1: 976111bc62a69e95e061da3a49efec94e86ca96a SHA-256: 7734a8cc9250d4ea86754e3cc91c25768d37b68e81375ac77a1a8a1cbc69a0e7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded URLs, with one specifically identified as a malicious redirector. The heuristic firings indicate that the document instructs users to disable security software, a common tactic to facilitate further malicious activity. The presence of a link farm suggests an attempt to manipulate search engine results for malicious purposes. The primary malicious URL identified is https://ttraff.ru/pify?keyword=adobe+illustrator+cs6+free++google+drive.

Heuristics 4

  • 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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.ru/pify?keyword=adobe+illustrator+cs6+free++google+drive
    • http://files.fixfaithsfemur.com/uploads/1/3/0/7/130739746/1847196.pdf
    • https://cdn.shopify.com/s/files/1/0434/2556/2785/files/chaka_dolla_ghetto_boy_song.pdf
    • https://cdn.shopify.com/s/files/1/0436/8180/8549/files/positive_and_negative_feedback_amplifier.pdf
    • https://cdn.shopify.com/s/files/1/0430/3332/9817/files/jeseruto.pdf
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/20772207340.pdf
    • https://cdn.shopify.com/s/files/1/0449/9701/7768/files/alfresco_document_management.pdf
    • https://cdn.shopify.com/s/files/1/0434/7330/5762/files/bulev.pdf
    • https://cdn.shopify.com/s/files/1/0432/5759/4016/files/batman_arkham_knight_save_game_ps4.pdf
    • https://cdn.shopify.com/s/files/1/0432/3675/3570/files/26904965129.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/94551300956.pdf
    • https://cdn.shopify.com/s/files/1/0434/4990/9415/files/tuwujada.pdf
    • https://cdn.shopify.com/s/files/1/0429/7929/5383/files/fujituvuwi.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_off00005791.bin
72c489e71f51768a18ffa0b2cd6075617a7acd56c6dd85b04fec95d1711e75e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5791 5532 bytes
font_01_sfnt_off00006a74.bin
34a9db73cfe8d994cdf4730fdd1510dfb18c6412acc934586dff34927db51d0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A74 10888 bytes

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