Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd06520561005588…

MALICIOUS

PDF

53.3 KB Created: 2020-08-11 04:49:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4d305661feb463fbb2fb146fc0343af SHA-1: 2d12ea26d9a0a8881a4f74793fa100086bd414ce SHA-256: bd065205610055887a156831eeab6a0018433b4c32527748e327f5eb1333a046
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at traff.ru. This suggests a phishing or redirection attack, likely aiming to lead the user to malicious content. The document body, though heavily obfuscated, contains the target URL, reinforcing the redirection attempt.

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/pify?keyword=cartesian+product+of+sets+worksheet+pdf
    • http://xetunu.carmonaconsulting.com/uploads/1/3/0/8/130814161/jifiwawajubupovugap.pdf
    • http://files.carasoul.com/uploads/1/3/1/4/131437380/jelekajenit_zeberusob_pebisezofufu.pdf
    • http://jewapuj.myworldsparkles.com/uploads/1/3/1/6/131637419/a72b92f4a2.pdf
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/farumobipiba.pdf
    • https://cdn.shopify.com/s/files/1/0433/0668/0484/files/argumentative_writing_definition.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5813/files/vomiwumudesepujileja.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/53300189001.pdf
    • https://cdn.shopify.com/s/files/1/0432/2505/5387/files/fawedafobimew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32852202686.pdf
    • https://cdn.shopify.com/s/files/1/0447/6112/0919/files/public_policy.pdf
    • https://cdn.shopify.com/s/files/1/0427/7554/3964/files/bsc_3rd_year_maths_question_paper_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/3722/8188/files/blood_groups_and_diet.pdf
    • https://cdn.shopify.com/s/files/1/0435/2655/3752/files/key_and_peele_draft_names.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_off000072b4.bin
b0c18bf13ad0dff64049833c271915889a6df7feb78509ee417265ee74bef423		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72B4 5272 bytes
font_01_sfnt_off000084b0.bin
1320698ca65fd3cc44894710f8e3c65c16b44b73549166722ad6f09abadaa886		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84B0 13528 bytes
font_02_sfnt_off0000b067.bin
38c352dce9f46c7b7db55bf3b4cc70b04bb1108340208a51ed4f51e2a04025bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB067 16356 bytes

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