Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2faf1bb868e8e03…

MALICIOUS

PDF

45.8 KB Created: 2020-09-09 04:54:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c2e40370ffcb2ec4b6ab6c8712d48a5 SHA-1: 3c802dac112d4f0fd5d3d0b73e47482d6897bc50 SHA-256: d2faf1bb868e8e03ad56de71938036e9f735e15d4582b8bfd40c2ce253c27c87
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.link/wix?keyword=ac+market+atualizado+apk'. The document body, though heavily obfuscated, contains references to 'Ac market atualizado apk', suggesting a lure for users to download potentially malicious software. The file also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm strategy to improve search engine ranking for malicious content.

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.link/wix?keyword=ac+market+atualizado+apk
    • https://cdn.shopify.com/s/files/1/0438/1668/1629/files/carbon_fiber_sheets_blockheads.pdf
    • https://cdn.shopify.com/s/files/1/0435/8583/1070/files/96268310363.pdf
    • https://cdn.shopify.com/s/files/1/0435/8805/9293/files/fizofegipisuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/sekanopulalivurivotujelaw.pdf
    • https://cdn.shopify.com/s/files/1/0447/7770/1533/files/fidexikotenotere.pdf
    • https://static.usrfiles.com/ugd/3b7182_79bf8edb9c4a48f195e02f9405089dcb.pdf
    • https://static.usrfiles.com/ugd/d94ae5_15acdcf0202a4245bb4d954823784b87.pdf
    • https://static.usrfiles.com/ugd/85d67f_8cf3a121f07c4aa18dc75b557e330d22.pdf
    • https://cdn.shopify.com/s/files/1/0435/3127/2351/files/9512198286.pdf
    • https://cdn.shopify.com/s/files/1/0462/8440/6944/files/8856140440.pdf
    • https://cdn.shopify.com/s/files/1/0438/4813/8912/files/brenton_tarrant_manifesto.pdf
    • https://static.usrfiles.com/ugd/7e84b7_07a45c77e8ed4dabaef73920b8fc7637.pdf
    • https://static.usrfiles.com/ugd/03a576_247830bd877241f58daf0b3e852ac9f8.pdf
    • https://static.usrfiles.com/ugd/035627_772973cca03c4b6e9918003febfb7d4a.pdf
    • https://static.usrfiles.com/ugd/c75f60_fde2ae00808f45fba9213ec07ed96d92.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f58.bin
3bfdfc002a18d6ddf7520bef4edf0fdefabc7d5122f71f90784888b575fe3ec3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F58 5144 bytes
font_01_sfnt_off000070bf.bin
337d6416420a05dbdd303242054fb0b81607403aa080aa24d751cc4156ccb357
pdf-font-stream PDF embedded font (sfnt) at offset 0x70BF 2236 bytes
font_02_sfnt_off00007ada.bin
91eceef17664f336d0da9d33f193c7f5f481cb270fa168b9cba98384bfb07fac
pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADA 10376 bytes
font_03_sfnt_off00009e8d.bin
eff260de515204b09a9ef4db25a41e244ce4353b3dccb5a2a8fc415043b9e3a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E8D 2752 bytes