Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7d18e83509c1805…

MALICIOUS

PDF

46.8 KB Created: 2020-08-13 23:09:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bacfabbb21ebcdd4b6e40403c8784568 SHA-1: 137b2b2ef22f07949ad5407c5ef1dc8abfda4331 SHA-256: d7d18e83509c18050211ef8c622f808eeeb0aa837addbf99c3793850fbe49d9e
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to shopify.com domains, but the primary malicious indicator is the ttraff.com redirector. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bluestacks+apk+y%25C3%25BCkleme+hatas%25C4%25B1
    • http://files.calvarygo.org/uploads/1/3/2/6/132696465/vifowu_naziretuwewu_zojukelizo.pdf
    • http://files.mrmacbiblebook1.com/uploads/1/3/1/8/131856244/9492865.pdf
    • http://wowow.landmark-mgmt.com/uploads/1/3/0/8/130813821/tonopupesozipi_jobigadifoketam_xujipixida_tusov.pdf
    • http://files.friendshipministries.com/uploads/1/3/0/7/130738614/nilesapukufuj.pdf
    • https://cdn.shopify.com/s/files/1/0429/3256/8220/files/pikavepenuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/5_point_scale.pdf
    • https://cdn.shopify.com/s/files/1/0430/3932/6365/files/jezakesunatimafefob.pdf
    • https://cdn.shopify.com/s/files/1/0431/9644/8917/files/puvixak.pdf
    • https://cdn.shopify.com/s/files/1/0437/4816/3738/files/fufamovivazan.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/radenaxazitilavurikemo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8251/3561/files/complete_information_about_computer.pdf
    • https://cdn.shopify.com/s/files/1/0429/0913/9111/files/concierto_de_aranjuez_para_trompeta.pdf
    • https://cdn.shopify.com/s/files/1/0434/9070/5574/files/calefactores_solares.pdf
    • https://cdn.shopify.com/s/files/1/0440/2138/3333/files/23885031601.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4197/files/sagofegowa.pdf
    • https://cdn.shopify.com/s/files/1/0438/2480/8096/files/25930259283.pdf
    • https://cdn.shopify.com/s/files/1/0438/0003/5485/files/92072130335.pdf
    • https://cdn.shopify.com/s/files/1/0431/5149/1233/files/vumelekoj.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/
    • https://cdn.shopify.com/s/files/1/0431/5149/1233/files/vumelekoj

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007504.bin
9fe053b7fafcefcc9ea565ba6b0c87b56c2ce59e24080f76071245658fb43f36
pdf-font-stream PDF embedded font (sfnt) at offset 0x7504 5444 bytes
font_01_sfnt_off00008744.bin
ba3a97f6132774367a1dc02bc1510cb0eb45f6d27fea5c555158618ac3e23556
pdf-font-stream PDF embedded font (sfnt) at offset 0x8744 11944 bytes