Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f3d44eece85e2bd…

MALICIOUS

PDF

56.3 KB Created: 2020-08-20 01:22:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61428f3456d108aac506044a6c7cee9f SHA-1: 338ea236f67bb1c53a9e66d85d8065956c87c02d SHA-256: 8f3d44eece85e2bd58effcedaa01d7a8e9ba12ab296af6cbf6f120599093edd8
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=heat+of+formation+of+cyclohexane, which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting a link farm or SEO poisoning tactic to lure victims. No scripts were extracted, limiting the analysis of direct payload execution.

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.com/pify?keyword=heat+of+formation+of+cyclohexane
    • http://folixi.jamesscode.com/uploads/1/3/1/4/131437949/ranafipobigivolekoj.pdf
    • http://files.wawaudax.com/uploads/1/3/1/6/131637553/3983133.pdf
    • http://files.cultivatecornwall.com/uploads/1/3/0/7/130775715/7832074.pdf
    • http://sakipo.isabelladavid.com/uploads/1/3/1/0/131070331/saduvowaxi-rinedolagizipu-zowugiwiwi.pdf
    • http://files.gracepianostudio.com/uploads/1/3/0/7/130776141/lelujibi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/lepaboson.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8246/files/boy_scout_uniform_patches_placement.pdf
    • https://cdn.shopify.com/s/files/1/0434/6953/7432/files/50654946468.pdf
    • https://cdn.shopify.com/s/files/1/0430/1229/2767/files/baranasasefavupufejiwu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/minecraft_minimap_mod_1._7._10.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3097/files/tijopebizijijiwefekusafik.pdf
    • https://cdn.shopify.com/s/files/1/0440/8472/3864/files/bm_das_anthropology.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4396/files/dunoko.pdf
    • https://cdn.shopify.com/s/files/1/0437/2781/4805/files/design_of_machinery_norton.pdf
    • https://cdn.shopify.com/s/files/1/0435/2265/4362/files/kijasivadofimewejejelupuv.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_off00006c5a.bin
5516ec2a43763085351ad17c471bf222bfe413b07e99a422cdee7c523efe4e4a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5A 4860 bytes
font_01_sfnt_off00007cad.bin
7a8d2b5e6bfb228e3eb063c1d9244e70fe356e3553942c9d343a1d167dd7deaf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CAD 16880 bytes
font_02_sfnt_off0000b18b.bin
9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940
pdf-font-stream PDF embedded font (sfnt) at offset 0xB18B 16036 bytes
font_03_sfnt_off0000c5f4.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xC5F4 4324 bytes