Malicious PDF — malware analysis report

Static analysis result for SHA-256 df2bce167ebb9a0c…

MALICIOUS

PDF

39.1 KB Created: 2020-08-30 23:15:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16d70ecc7e2b5560e90bc20f361d382e SHA-1: c8949e857ebd49f503578c77be65bf3d28015cde SHA-256: df2bce167ebb9a0c99e08b3fb5241ce808f583d19c7427608a304b364d548696
168 Risk Score

Malware Insights

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

The PDF file contains a lure for a 'Gta 4 drunk camera fix free download' and includes a link to a redirector hosted on ttraff.com. This redirector is likely used to deliver a malicious payload. The document also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm for SEO manipulation, potentially to obscure the malicious redirector. The presence of a 'password-protected archive lure' heuristic indicates a common tactic to bypass security scanning.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/wix?keyword=gta+4+drunk+camera+fix+free+download
    • https://cdn.shopify.com/s/files/1/0438/9352/2587/files/fomorokolumunadiwago.pdf
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/anxiety_test_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/grammar_games_and_activities_peter_watcyn_jones_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/very_hungry_caterpillar_worksheet_preschool.pdf
    • https://cdn.shopify.com/s/files/1/0433/7795/0881/files/papa_calling_ringtone_free.pdf
    • https://cdn.shopify.com/s/files/1/0463/0020/1117/files/offline_bingo_games_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0435/3887/4532/files/zapig.pdf
    • https://cdn.shopify.com/s/files/1/0437/6068/1111/files/lucky_block_race_map.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1726/files/aix_basic_commands.pdf
    • https://static.usrfiles.com/ugd/b8c837_897adf9c4edd4691803fa37a7a654b2c.pdf
    • https://static.usrfiles.com/ugd/daca0d_477a81b6d29d45878d26ad985316052b.pdf
    • https://static.usrfiles.com/ugd/b8c837_73a997d589bb4aad9a06a1fbfdf871ed.pdf
    • https://static.usrfiles.com/ugd/b8c837_ba385a38c96a47f6959ba425c99e3d8d.pdf
    • https://static.usrfiles.com/ugd/8127dd_19794d67e5ee45e99d30b8ded440a460.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_off00005930.bin
3881229e87a1113e743b02f3dc2fbb8a0df420c6c342bd159f619547f85017db
pdf-font-stream PDF embedded font (sfnt) at offset 0x5930 5332 bytes
font_01_sfnt_off00006b62.bin
838728faaac4ec41ed61aa9234974640e4eb85adf32f2fc0b2ab1f8c54d1f371
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B62 10588 bytes