Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9a132e1d350a3c4…

MALICIOUS

PDF

42.6 KB Created: 2020-08-09 01:45:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c25ec7fb47b11f47bab9e274b646573 SHA-1: c19aae3a2b004a267936b1f3ee43a35310c47f38 SHA-256: b9a132e1d350a3c4e629e50a5c8033a28f2d32dc17112e8c670540136ba78afe
128 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a 'Pan card application form for NRI PDF'. This lure is intended to trick the user into clicking the link, which leads to a redirector. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF documents, likely to manipulate search engine results or host malicious content. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=pan+card+application+form+for+nri+pdf
    • http://bajev.centraleuropeanstringquartet.com/uploads/1/3/0/7/130775971/aad883.pdf
    • http://files.bsidessatx.com/uploads/1/3/1/3/131380354/sopumolup.pdf
    • http://files.carolhemsleymosaics.com/uploads/1/3/1/4/131407952/wajew.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/what_is_mp3_rocket_pro.pdf
    • https://cdn.shopify.com/s/files/1/0434/3159/2092/files/realistic_needs_and_diseases_skyrim_se.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/melase.pdf
    • https://cdn.shopify.com/s/files/1/0441/3331/8808/files/anti_inflammatory_drugs_list.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/weather_worksheets_for_preschoolers.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/calculus_with_differential_equations_9th_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/70318404274.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/19577262495.pdf
    • https://cdn.shopify.com/s/files/1/0428/5241/7703/files/kinuvizidetobo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/fazuwawuvuzobet.pdf
    • https://cdn.shopify.com/s/files/1/0431/6332/0471/files/75481474240.pdf
    • https://cdn.shopify.com/s/files/1/0427/9946/4611/files/kesujesalemejiwemasef.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_off00006918.bin
57c3de0f2f0809333bc4070f41dba59ca6fb33cae206ae3188eee8b57764bfd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6918 5124 bytes
font_01_sfnt_off00007a78.bin
a0e82e2398a8d2abd4af3cefb7ecf99d70f08621605de1a640ed4bc6d955a9ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A78 10260 bytes