Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a0effca625ac627…

MALICIOUS

PDF

54.2 KB Created: 2020-08-05 04:20:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe0b68618fbfea4531d0234c409c6cf7 SHA-1: 51a18628852a919f90e1456d92b03b21ea3958f2 SHA-256: 3a0effca625ac6273e3897015a7afc18c0eed13265d3b62586c0c2ad50c5fd6d
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=training+critical+appraisal+of+a+topic+pdf'. Additionally, it features a PDF link farm heuristic, suggesting an attempt to distribute content via multiple links, with 'https://cdn.shopify.com/s/files/1/0428/6083/9079/files/94163305354.pdf' being a prominent example. The document body, though heavily obfuscated, contains the same redirect URL, reinforcing the malicious intent.

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=training+critical+appraisal+of+a+topic+pdf
    • http://files.hillsideschoolcville.com/uploads/1/3/1/4/131437932/fd1427dc.pdf
    • http://files.mschurchofchrist.net/uploads/1/3/1/3/131381374/814f6aa.pdf
    • http://files.ororossodelmonferrato.com/uploads/1/3/1/1/131163632/1350963.pdf
    • http://files.luckypennyrealty.com/uploads/1/3/0/7/130776567/9317475.pdf
    • https://cdn.shopify.com/s/files/1/0428/6083/9079/files/94163305354.pdf
    • https://cdn.shopify.com/s/files/1/0433/9489/1943/files/55174946407.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84593422723.pdf
    • https://cdn.shopify.com/s/files/1/0431/2170/5124/files/kingdom_hearts_re_coded_rom.pdf
    • https://cdn.shopify.com/s/files/1/0431/4487/2090/files/popagi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wesani.pdf
    • https://cdn.shopify.com/s/files/1/0431/1361/1413/files/vesoxudajozud.pdf
    • https://cdn.shopify.com/s/files/1/0437/0835/0619/files/paleo_diet_plan_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0430/4112/8601/files/92201157925.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/96162402059.pdf
    • https://cdn.shopify.com/s/files/1/0432/2544/8615/files/antigen_antibody_structure_and_function.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6939/files/fakoromobasi.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_off00008a21.bin
6861b0ffcae3697a8f01bdeffb685e64365ce1e59826d25f64589edad42c6074
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A21 4944 bytes
font_01_sfnt_off00009ae4.bin
7ad1c38bc91b8daf60fc6ae52efe501200ba833b2ecb9695e3baa14ef486c6c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x9AE4 10144 bytes
font_02_sfnt_off0000bd73.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xBD73 4324 bytes