Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a395ef2d7a4013e…

MALICIOUS

PDF

59.4 KB Created: 2020-08-01 02:46:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdbd5461d027490e52037bb4909422f7 SHA-1: 284cd06b35bf165b95d384238fc24a788deb73be SHA-256: 3a395ef2d7a4013e64a97e2c7716ec066cc06a295e51d0143c8f9ac90bf97512
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic identifying it as a redirector link to known malicious infrastructure. Additionally, it contains a large number of external PDF links, suggesting a link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=k+project+season+2, which likely serves as a gateway to further malicious content. The document body contains garbled text but includes the suspicious URL and several other PDF links hosted on cdn.shopify.com and other domains.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=k+project+season+2
    • http://files.jjsdka.org/uploads/1/3/0/9/130969819/98a098cf.pdf
    • http://files.mangowavecreations.com/uploads/1/3/2/6/132681482/9641224.pdf
    • http://files.huskersalute.org/uploads/1/3/1/4/131454808/pufes.pdf
    • https://cdn.shopify.com/s/files/1/0438/0459/0242/files/88775196393.pdf
    • https://cdn.shopify.com/s/files/1/0431/6227/1898/files/sonobabo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0727/8238/files/3d_anime_character_creator.pdf
    • https://cdn.shopify.com/s/files/1/0438/1632/1184/files/kivapujejo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5004/1495/files/96968073097.pdf
    • https://cdn.shopify.com/s/files/1/0435/6007/5427/files/36915501421.pdf
    • https://cdn.shopify.com/s/files/1/0438/3280/3488/files/eken_h9_firmware.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6307/files/jonewababifoxiwirivewa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0710/6462/files/78157051867.pdf
    • https://cdn.shopify.com/s/files/1/0431/0577/9878/files/gozem.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0300/files/fatonoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/87351701562.pdf
    • https://cdn.shopify.com/s/files/1/0434/5724/9430/files/deluxufigafovav.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6917/files/84218229256.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_off00008b87.bin
360ad8713c6225a0c53de0bd3b5355fb5066ccd57ac980d9105a79bfbd7dab3b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B87 8940 bytes
font_01_sfnt_off0000a967.bin
6ace19fa40ae3e83de2bec1a0eaee583962db72ad286a6e3ee8a6d4acea21b69
pdf-font-stream PDF embedded font (sfnt) at offset 0xA967 5072 bytes
font_02_sfnt_off0000babf.bin
73a67b11c24f70899795da6b9dc2f917bbe4616914655b7f66326b4c0748bb92
pdf-font-stream PDF embedded font (sfnt) at offset 0xBABF 11292 bytes