Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba87deba008c59d4…

MALICIOUS

PDF

43.5 KB Created: 2020-07-21 14:54:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff7523e83016a7a85514906cd34b8197 SHA-1: abe96f0318083cb0470bc3dbe9cbac1da7c2d1f0 SHA-256: ba87deba008c59d467ea593607e584e87f15498130367c8e9a4f99c908828653
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, characteristic of a link farm designed to improve search engine rankings or distribute malicious content. One of the embedded URLs, 'https://ttraff.ru/wb?keyword=acls%20pocket%20card%20pdf', is flagged as a malicious redirector. This suggests the document's primary purpose is to lure users to potentially harmful websites.

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.ru/wb?keyword=acls%20pocket%20card%20pdf
    • http://files.morganfurze.com/uploads/1/3/1/3/131383664/e47dcbbe4.pdf
    • http://files.capetowndaytours.net/uploads/1/3/0/8/130874629/bugob-bowon-jozopo-vudux.pdf
    • http://files.brmandel.com/uploads/1/3/1/6/131606719/tilinepuj.pdf
    • http://files.miss-pj.com/uploads/1/3/0/7/130738771/9455160.pdf
    • http://files.aztecag.com/uploads/1/3/1/4/131437161/3dfe7affce82d1.pdf
    • https://cdn.shopify.com/s/files/1/0432/2512/0927/files/jotajuzaxi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2544/9628/files/4913604786.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75130531250.pdf
    • https://cdn.shopify.com/s/files/1/0439/1262/6344/files/tajuzukulaxar.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/82370673146.pdf
    • https://jowoxub.files.wordpress.com/2020/07/9754463484.pdf
    • https://wilopag.files.wordpress.com/2020/06/jubijogaxokiwi.pdf
    • https://bosoroju.files.wordpress.com/2020/06/40907025950.pdf
    • https://fuwewosalija.files.wordpress.com/2020/07/32520361541.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tokon.pdf
    • https://cdn.shopify.com/s/files/1/0434/1635/4977/files/jabewukanutemivi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3126/files/zinexelunagexuzen.pdf
    • https://cdn.shopify.com/s/files/1/0432/9367/1588/files/sarekuvimunosereguxor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xumilegimazuguvabunozanik.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/zutubakif.pdf
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/26893172451.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d08.bin
e384a704bbeb4ae7fdca69df7dd0acad50bf8f8d0b6523b7757b4c62a3ec7a2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D08 4836 bytes
font_01_sfnt_off00007d89.bin
5df234268d47ea7bc0807661fe94f9fa01b06e8bd5a9581b386962c834476d90
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D89 10100 bytes