Malicious PDF — malware analysis report

Static analysis result for SHA-256 486358dde11be98b…

MALICIOUS

PDF

42.3 KB Created: 2020-08-05 08:04:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01ccd97e6b34128a85c95e12dbff9aaa SHA-1: 9ea509dfc8c2695f6adc054297455f36bf2cd81d SHA-256: 486358dde11be98bc30c2c3fe2ef42fbbdea6458d13ade78a9752500bb77c241
160 Risk Score

Malware Insights

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

The PDF document contains embedded links, one of which points to a known malicious redirector. The document body text, though partially corrupted, includes the URL 'https://ttraff.ru/pify?keyword=outlook+365+won+t+open+pdf+attachments', suggesting a lure to trick users into clicking the link. The presence of a large number of external PDF links and an instruction to disable security software further indicates malicious intent, likely to redirect the user to a malicious site or download further payloads.

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=outlook+365+won+t+open+pdf+attachments
    • http://files.westhawthornuniting.org/uploads/1/3/2/6/132682640/c08b3ac4.pdf
    • http://vetus.thematlethbridge.com/uploads/1/3/1/8/131871674/b675c5d74.pdf
    • http://files.imagesbylesrigby.com/uploads/1/3/0/7/130738919/tamojukafi.pdf
    • http://files.morrisiennafarm.net/uploads/1/3/0/8/130814050/bf86e72ddb01.pdf
    • https://cdn.shopify.com/s/files/1/0431/1348/0343/files/kadetavuwafodafa.pdf
    • https://cdn.shopify.com/s/files/1/0433/8860/0478/files/61010301985.pdf
    • https://cdn.shopify.com/s/files/1/0431/9779/2420/files/favasijeludi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0909/7376/files/74432902754.pdf
    • https://cdn.shopify.com/s/files/1/0432/2711/9784/files/72719505650.pdf
    • https://cdn.shopify.com/s/files/1/0433/4911/5029/files/53252468154.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/xokusuvufid.pdf
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/26818208553.pdf
    • https://cdn.shopify.com/s/files/1/0441/0625/2440/files/21863626700.pdf
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/18206013604.pdf
    • https://cdn.shopify.com/s/files/1/0437/6153/3082/files/68715714796.pdf
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/81159155008.pdf
    • https://cdn.shopify.com/s/files/1/0433/9764/4449/files/manual_de_anestesia_local_stanley_f._malamed.pdf
    • https://cdn.shopify.com/s/files/1/0435/4605/0728/files/xijekujugusidep.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_off000065ab.bin
528e72230322416e138eb277cc772c5f0ddf25bb7ca6060f3caeaffe3bfc24fd
pdf-font-stream PDF embedded font (sfnt) at offset 0x65AB 5924 bytes
font_01_sfnt_off000079ca.bin
7635e661255070de34b4a3713e1a658ff9734bcf32ecd890e4b9af3c939ab97b
pdf-font-stream PDF embedded font (sfnt) at offset 0x79CA 10064 bytes