Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bad19cb321f7b5b…

MALICIOUS

PDF

51.0 KB Created: 2020-08-11 03:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6002c17ef7ef764bb04762691910a00 SHA-1: b027d62829dfc32958b2c9564415fa6e05605413 SHA-256: 1bad19cb321f7b5b01271cb9871748dacaa054209ee05dfc975cf6b8196fd8c7
130 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. This URL is presented within the document body, disguised as a link to a workout PDF. The file also contains a heuristic for a PDF link farm, indicating a potential SEO poisoning or spamming attempt. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=intermediate+calisthenics+workout+pdf
    • http://files.caitlindemeyere.ca/uploads/1/3/0/8/130874612/df4d54550cb3.pdf
    • http://files.meridaanderson.com/uploads/1/3/2/6/132695629/4932697.pdf
    • http://files.mraducanu.com/uploads/1/3/1/4/131437806/4959444.pdf
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/1445501413.pdf
    • https://cdn.shopify.com/s/files/1/0436/0355/8564/files/55779614625.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/18940920731.pdf
    • https://cdn.shopify.com/s/files/1/0436/1905/7822/files/2926190562.pdf
    • https://cdn.shopify.com/s/files/1/0447/2533/8265/files/all_formulas_of_maths_class_10.pdf
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/win_zip_command_line.pdf
    • https://cdn.shopify.com/s/files/1/0428/8380/9443/files/dnd_5e_help_action.pdf
    • https://cdn.shopify.com/s/files/1/0437/6900/4190/files/74601483917.pdf
    • https://cdn.shopify.com/s/files/1/0435/6787/4207/files/78114920831.pdf
    • https://cdn.shopify.com/s/files/1/0434/6154/2054/files/probability_questions_with_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0434/1910/7495/files/guia_autometrica_mayo_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/volibevupenilitiverodere.pdf
    • https://cdn.shopify.com/s/files/1/0435/8946/8328/files/xalajukame.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/1/0

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007240.bin
5c59f4387e27889d030d904c705481701dd4f583c3a6defdb8022f8bdc57c8ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x7240 5488 bytes
font_01_sfnt_off000084c3.bin
15dc64c81c37cdfe206549fd5bff396c6f4a01e819c9b7a87362d02b2dbb1d6e
pdf-font-stream PDF embedded font (sfnt) at offset 0x84C3 10612 bytes
font_02_sfnt_off0000a931.bin
c5b81f703ebddc697e6824868dcd306aba919aa4c1ec28f594a83a04df97872b
pdf-font-stream PDF embedded font (sfnt) at offset 0xA931 16144 bytes