Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef95e0b7c84468e…

MALICIOUS

PDF

44.6 KB Created: 2020-08-27 19:02:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00836375e56b2d130be0629d8b3cf649 SHA-1: 6ff6f8058bf7cd7f919176d5c828c2146cd6a01c SHA-256: 2ef95e0b7c84468eb943305ed2a7c2e06c7bc476f34674798c4481100c91395c
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the target URL and references to 'John deere tractor canopy', suggesting a lure to attract clicks. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves redirecting the user to malicious infrastructure via a link farm.

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.com/pify?keyword=john+deere+tractor+canopy
    • http://xugokeb.brianebaugh.com/uploads/1/3/1/6/131636908/folip.pdf
    • http://files.turtlebeachpc08.com/uploads/1/3/2/7/132710491/8583117.pdf
    • http://files.tortoise.com/uploads/1/3/1/4/131452976/felimulunoxu-ramejeni.pdf
    • https://cdn.shopify.com/s/files/1/0432/8803/5486/files/zapudiwum.pdf
    • https://cdn.shopify.com/s/files/1/0430/4843/5861/files/zukisosonikakajivunigafet.pdf
    • https://cdn.shopify.com/s/files/1/0427/4028/5607/files/remisagegoxugidemube.pdf
    • https://cdn.shopify.com/s/files/1/0429/5013/1878/files/49144628362.pdf
    • https://cdn.shopify.com/s/files/1/0432/5690/5885/files/zemujiwutifizu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/inferior_alveolar_nerve_block_technique.pdf
    • https://cdn.shopify.com/s/files/1/0428/8262/9798/files/dasar_dasar_akuntansi_jilid_1_al._haryono_jusup.pdf
    • https://cdn.shopify.com/s/files/1/0434/6626/0642/files/lufonabudibidazapi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5363/8044/files/95609343721.pdf
    • https://cdn.shopify.com/s/files/1/0433/9263/0947/files/aqa_a_level_biology_specification.pdf
    • https://cdn.shopify.com/s/files/1/0435/6207/4261/files/6868139500.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_off0000712a.bin
e5127f8f9d8aaee15410d4f94d6eb3e5224ade6457aa24e21f83738b5e396d97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x712A 5040 bytes
font_01_sfnt_off00008248.bin
0641489302a210eba929ef49eb1bcf8a8cdbfb774164675a31ac1d8630a08851		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8248 10412 bytes

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