Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3303c7524d38810…

MALICIOUS

PDF

47.7 KB Created: 2020-08-19 01:25:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6333234de8c23169f26cbe2a4bfd9dc SHA-1: dedb1fd0070752bcc6eec2bd030b49a5dae7758c SHA-256: a3303c7524d388104efa3857a88d44296f1faa03da91f6b5e5561c9b26d69b9c
140 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, masquerading as an annual credit report request. This is further supported by the PDF_SEO_LINK_FARM heuristic, indicating a large number of similar links. The SE_CALLBACK_LURE heuristic suggests a potential callback phishing or tech-support scam pretext. No scripts were extracted from this sample, limiting the ability to determine further payload delivery or persistence mechanisms.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=annual+credit+report+request
    • http://kutukujav.creativeflowbylaura.com/uploads/1/3/1/0/131069934/1068968.pdf
    • http://files.shawnbersethmemorialfund.com/uploads/1/3/0/7/130776655/1049152.pdf
    • https://cdn.shopify.com/s/files/1/0439/0486/0328/files/70463297605.pdf
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/d_d_5e_custom_character_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/6068/1111/files/prepositional_phrase_list_a_z.pdf
    • https://cdn.shopify.com/s/files/1/0430/6019/9573/files/kipulo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4460/0999/files/98902267266.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/68344925666.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/44759747141.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/pominolumaxetekejavofar.pdf
    • https://cdn.shopify.com/s/files/1/0431/5208/1053/files/53976219999.pdf
    • https://cdn.shopify.com/s/files/1/0432/2823/3885/files/37896981869.pdf
    • https://cdn.shopify.com/s/files/1/0433/7795/0870/files/57362839449.pdf
    • https://cdn.shopify.com/s/files/1/0428/9308/2783/files/zerigobopokivuzaj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f1f.bin
838755878e6d3ba58740f004948f7be5193438ef232d239d20e6299f5816d8de
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1F 5064 bytes
font_01_sfnt_off00008048.bin
d4a4b78c94608e18b54bfd49b47ddeb91a4780734a8ecbe7e2d8241075b78c1a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8048 10444 bytes
font_02_sfnt_off0000a3f3.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3F3 4324 bytes