Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4b3d8671a400efb…

MALICIOUS

PDF

44.8 KB Created: 2020-08-15 04:38:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a25936fb9648c7798db49ae55eb6012 SHA-1: 757545e0bd644842fb46e1baee67f812f4931a6b SHA-256: b4b3d8671a400efb6e3f9cfd9ef18c24f8b27d784161b709e840a87ebd9ca54d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=canva+mod+apk+unlocked'. This URL is presented within the document body, suggesting a social engineering lure to trick users into clicking it. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely to manipulate search engine rankings or distribute malicious content. No scripts were extracted from this sample.

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/pify?keyword=canva+mod+apk+unlocked
    • http://xudawi.lifeofchristrosary.com/uploads/1/3/2/3/132303035/479007.pdf
    • http://dowij.kt6vocalgroup.org/uploads/1/3/2/6/132682883/pulipili_davuxas_fometutafe_gisuwalezofo.pdf
    • https://cdn.shopify.com/s/files/1/0439/2471/7723/files/angular_2_form_array_example.pdf
    • https://cdn.shopify.com/s/files/1/0439/0741/6219/files/hyperbole_and_a_half_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0443/6181/0076/files/amazing_english_1.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/500_ielts_vocabulary.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/zolakapomukomunakez.pdf
    • https://cdn.shopify.com/s/files/1/0448/8301/7895/files/barreras_de_la_comunicacion.pdf
    • https://cdn.shopify.com/s/files/1/0433/4485/5195/files/sezekoginavosipalijiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/6189/4565/files/importancia_da_biblioteca_escolar.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/accountant_responsibilities.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3782/files/31228230467.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6867/files/47272199576.pdf
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/19582100708.pdf
    • https://cdn.shopify.com/s/files/1/0440/2541/3782/files/aptitude_exam.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_off000063f9.bin
cd8c51689a1cdb266323f7bbd9b3c18759eac17c6c2a204344acb7048355a08e
pdf-font-stream PDF embedded font (sfnt) at offset 0x63F9 4972 bytes
font_01_sfnt_off000074d5.bin
de54d0a1636abddcd436866151f8046772fbbd1b0608a5b931efacdc415e496b
pdf-font-stream PDF embedded font (sfnt) at offset 0x74D5 2736 bytes
font_02_sfnt_off00008092.bin
7d0112fbe6a942e8c1c1a11ea132187431d9ac9eb6417c3b5a09ce06ecb23591
pdf-font-stream PDF embedded font (sfnt) at offset 0x8092 10464 bytes