Malicious PDF — malware analysis report

Static analysis result for SHA-256 a74dd154cdc2572e…

MALICIOUS

PDF

49.0 KB Created: 2020-07-16 15:39:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 711e67722a4e44587f8e02374cdf65bc SHA-1: d4668fba9ec77b8c870e24c3af96d541fe35cdda SHA-256: a74dd154cdc2572ec61919f33ba19f3e74fc7ab355cde2d03a968b34febf5ff0
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a link to known malicious redirector infrastructure. Additionally, another critical heuristic detected a large number of embedded external PDF links, characteristic of a link farm. These findings suggest the document's primary purpose is to lure users to malicious sites.

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.cc/wb?keyword=dogs%20of%20war%20adrian%20tchaikovsky%20pdf
    • http://files.yael-levy.com/uploads/1/3/2/7/132712174/fesaduvurukun-maxarazadadex-bodalujetojuf-sakadoluvifav.pdf
    • http://files.paulcyon.me/uploads/1/3/1/3/131398286/vodutozikudoniredu.pdf
    • http://files.autumntrailsstable.com/uploads/1/3/1/6/131637239/zafewisawugem.pdf
    • http://files.besmirched.com/uploads/1/3/0/8/130874518/9478370.pdf
    • http://files.jeffersonhighwayinoklahoma.com/uploads/1/3/0/7/130776591/5086537.pdf
    • http://files.ananuno.net/uploads/1/3/1/4/131438501/533909.pdf
    • http://files.jjeffreymesserole.com/uploads/1/3/1/3/131384018/f3faf9c41e.pdf
    • https://sixuxonudibi.files
    • https://sixuxonudibi.files.wordpress.com/2020/06/gatatesupaguxigufa.pdf
    • https://rudagus.files.wordpress.com/2020/06/98056427478.pdf
    • https://ruzufugaf.files.wordpress.com/2020/06/kebipijax.pdf
    • https://zusanudez.files.wordpress.com/2020/06/63047631797.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/1987695206.pdf
    • https://cdn.shopify.com/s/files/1/0428/8770/8825/files/25053391594.pdf
    • https://cdn.shopify.com/s/files/1/0430/8146/6005/files/51359713760.pdf
    • https://cdn.shopify.com/s/files/1/0430/7874/6261/files/29595309872.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nisexabidubukov.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69296453687.pdf
    • https://cdn.shopify.com/s/files/1/0430/0685/3269/files/61629328097.pdf
    • https://cdn.shopify.com/s/files/1/0428/2613/7756/files/xasoja.pdf
    • https://cdn.shopify.com/s/files/1/0435/3998/8648/files/wapaneweta.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_off00008133.bin
4994d17808c67620cd0da0fbf81d87f65b3f90edefe01635f43f7c78ae399629
pdf-font-stream PDF embedded font (sfnt) at offset 0x8133 5372 bytes
font_01_sfnt_off00009389.bin
a8a922cb3bb175b85a51c221062ae423e73282ef573b566ea4a0152dabd6575e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9389 10392 bytes