Malicious PDF — malware analysis report

Static analysis result for SHA-256 588a0405b3dd832a…

MALICIOUS

PDF

36.0 KB Created: 2020-08-17 14:43:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5651c35c984f3907af127519f9ab36d3 SHA-1: 036c1b1a2e45a1336fbb4275b219717d0f5f2743 SHA-256: 588a0405b3dd832aca06853375e722aaeab1121f26174a88e36f70f0f4b5357a
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, disguised as a 'Bay area live traffic report'. This redirector likely leads to further malicious content or exploits. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains, suggesting an attempt to manipulate search engine results or distribute content. No scripts were extracted, and the document body is heavily obfuscated, but the primary malicious intent appears to be redirection via the embedded URL.

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.cc/pify?keyword=bay+area+live+traffic+report
    • http://files.tangoclt.com/uploads/1/3/1/4/131453034/6952236.pdf
    • http://files.beitnachum.org/uploads/1/3/1/4/131483253/ximegigojepirez_rabisosip_suwupisi.pdf
    • https://cdn.shopify.com/s/files/1/0440/6925/7366/files/moluwipip.pdf
    • https://cdn.shopify.com/s/files/1/0440/7607/3125/files/teoria_causalista_de_la_accion.pdf
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/16602669271.pdf
    • https://cdn.shopify.com/s/files/1/0432/2590/7368/files/40695194089.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75130531250.pdf
    • https://cdn.shopify.com/s/files/1/0437/0215/7466/files/28035020767.pdf
    • https://cdn.shopify.com/s/files/1/0432/8377/5643/files/python_filter_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0435/3556/4949/files/keto_diet_guide_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0441/1038/1208/files/almonard_fans_price_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/4674/7803/files/mofiwosibimajuri.pdf
    • https://cdn.shopify.com/s/files/1/0431/0496/0661/files/minecraft_burn_times.pdf
    • https://cdn.shopify.com/s/files/1/0434/7153/6290/files/bohemian_rhapsody_piano_partition.pdf
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/44626275715.pdf
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/bloqueo_av_congenito.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_off00004e3d.bin
ac2fd680c5465a5fdfef84a5bac93c05110da459e55303c2a9aeb68dda33436e
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E3D 5044 bytes
font_01_sfnt_off00005f82.bin
6383978805e4f29e3513413b9d927ecb47e9e00c43c0c374116fd25e5e38cccf
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F82 10448 bytes