Malicious PDF — malware analysis report

Static analysis result for SHA-256 acae6777c52563a0…

MALICIOUS

PDF

51.7 KB Created: 2020-08-22 23:24:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a55647a3e42fa3f2a69a368129437a08 SHA-1: 1b38546ce2b91bff341517a8b8b18bb9650cb230 SHA-256: acae6777c52563a071b118a24ea83f1c7e1205779513040e9093b5aa47dd0174
150 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, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the text 'Googly eyes template printable' and the malicious URL, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on cdn.shopify.com, likely to obscure the malicious destination. The ML classifier strongly supports the malicious verdict.

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=googly+eyes+template+printable
    • http://wemanobew.upstagenydanceacademy.com/uploads/1/3/0/9/130969525/lapubodujexu-pejitug-vanutizoju.pdf
    • http://files.zoitseems.com/uploads/1/3/2/3/132302718/gurekanejuj_rigis.pdf
    • http://files.pasturedpoultryinfo.com/uploads/1/3/1/3/131384081/2805928.pdf
    • http://files.barbaraweikamp.com/uploads/1/3/2/7/132712483/3577289.pdf
    • https://cdn.shopify.com/s/files/1/0455/4794/6149/files/adobe_signature_pad.pdf
    • https://cdn.shopify.com/s/files/1/0432/1509/3920/files/figijirodozavikenitonezas.pdf
    • https://cdn.shopify.com/s/files/1/0428/0313/4627/files/47565187852.pdf
    • https://cdn.shopify.com/s/files/1/0434/5449/6935/files/93903928467.pdf
    • https://cdn.shopify.com/s/files/1/0434/5567/6568/files/97528776123.pdf
    • https://cdn.shopify.com/s/files/1/0438/2271/0941/files/billboard_design_template_psd_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/59968820953.pdf
    • https://cdn.shopify.com/s/files/1/0438/1809/0653/files/wekodekufigox.pdf
    • https://cdn.shopify.com/s/files/1/0431/7803/3303/files/zifufibox.pdf
    • https://cdn.shopify.com/s/files/1/0428/9111/6700/files/27340380751.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8740/files/91923469157.pdf
    • https://cdn.shopify.com/s/files/1/0435/5263/7091/files/zener_diode_voltage_regulator.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4204/files/admissibility_review_office_contact_information.pdf
    • https://cdn.shopify.com/s/files/1/0434/2104/0792/files/1445463048.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_off00007de6.bin
ab5a18d4a0833c4ca98493a2552e768dae3d4aa0a77096d2c5b088e6e49c55ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE6 5200 bytes
font_01_sfnt_off00008f89.bin
4ff525c2cd5dffb7d2597bb376216ceba89265b15ac98d92c501a1114af3534e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F89 10444 bytes
font_02_sfnt_off0000b329.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0xB329 4324 bytes