Malicious PDF — malware analysis report

Static analysis result for SHA-256 b045c120006ad012…

MALICIOUS

PDF

100.4 KB Created: 2020-09-14 09:08:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba938d7cdbf4c03ea627abf15dfadd04 SHA-1: 07fdfd446a3c1837037e2915e2e2aa229db1199a SHA-256: b045c120006ad012189fe2049cff3e2e77e33f10e734c2400eb75db940b83d3b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged for containing a malicious redirector link and a link farm. The primary malicious URL identified is ttraff.ru, which is used in conjunction with a keyword that suggests a lure. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as the primary malicious element. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a coordinated effort to distribute malicious content or conduct phishing.

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.ru/wix?keyword=the+demon+lover+figurative+language+answers
    • https://cdn.shopify.com/s/files/1/0429/9289/4115/files/18777392581.pdf
    • https://cdn.shopify.com/s/files/1/0430/8231/7978/files/wetuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0790/0835/files/satafumuzagonugugixitig.pdf
    • https://static.usrfiles.com/ugd/a58b01_f587ec20f4854ae1882a8c5aad719ebd.pdf
    • https://cdn.shopify.com/s/files/1/0437/3141/9287/files/varus_knee_deformity_icd_10.pdf
    • https://cdn.shopify.com/s/files/1/0431/3055/2474/files/99719376850.pdf
    • https://cdn.shopify.com/s/files/1/0437/3151/7605/files/sas_tower_defense.pdf
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/czardas_cello_free_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/jelutubokakuvopegaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1087/files/sans_508_cost.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6959/files/linear_equations_in_two_variables_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9143/files/hearing_impairment_ielts_reading_answers_mini_ielts.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_off00014f96.bin
7bdfd9dd98038b2db9a86e5593fa1a4c82ab7370403c340f7993dd3992c09355		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14F96 5420 bytes
font_01_sfnt_off000161ed.bin
c3c88a849847d2efd7005afdd47f9eefec13bdd730b1c210f22a96dec28f35a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x161ED 10072 bytes

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