Malicious PDF — malware analysis report

Static analysis result for SHA-256 7892001cd993b857…

MALICIOUS

PDF

43.9 KB Created: 2020-08-18 22:21:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 853ecdbce8e142d2ed61f67caea716d1 SHA-1: b14a1904acf6c860d009a2991c0523189da967cb SHA-256: 7892001cd993b857992b3aa62d3e83e6fb08072f680da4aafad24ce07812460e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, disguised as an employment verification. The document body and embedded URLs further support this, with the primary malicious URL being https://ttraff.cc/pify?keyword=employment+verification+letter+template+pdf. The PDF also hosts a link farm, suggesting an attempt to manipulate search engine results or distribute content widely. 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.cc/pify?keyword=employment+verification+letter+template+pdf
    • http://files.3birdssoap.shop/uploads/1/3/2/6/132683088/e6dd458.pdf
    • http://lugizex.terrasoulherbs.com/uploads/1/3/2/8/132814718/11ab33.pdf
    • http://zazut.auro.group/uploads/1/3/1/0/131070109/3224726.pdf
    • http://dizakije.headlandparkartistprecinct.com/uploads/1/3/0/7/130776647/moganen-zagumenojuzazef-varabep.pdf
    • https://cdn.shopify.com/s/files/1/0431/9071/4532/files/memugatugi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6772/7269/files/classroom_objects_activities.pdf
    • https://cdn.shopify.com/s/files/1/0437/5258/7415/files/diablo_2_rune_runs_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/7699/3702/files/biblia_de_estudio_para_mujeres.pdf
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/nobaregex.pdf
    • https://cdn.shopify.com/s/files/1/0440/4363/2805/files/axelos_itil_4_foundation.pdf
    • https://cdn.shopify.com/s/files/1/0435/5981/3279/files/71956546925.pdf
    • https://cdn.shopify.com/s/files/1/0427/9464/7719/files/dadebeperukugefat.pdf
    • https://cdn.shopify.com/s/files/1/0439/2599/5688/files/rujojifiz.pdf
    • https://cdn.shopify.com/s/files/1/0439/1282/2939/files/javascript_array_remove_object.pdf
    • https://cdn.shopify.com/s/files/1/0432/9373/7110/files/lic_jeevan_lakshya_833.pdf
    • https://cdn.shopify.com/s/files/1/0440/7502/4549/files/felativokafunitenigaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/3516/4835/files/popefejezazajeses.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006059.bin
111e083fd05602077ecd483d4320dc4f68a63f41e244153200d08a29c667d561
pdf-font-stream PDF embedded font (sfnt) at offset 0x6059 5032 bytes
font_01_sfnt_off00007164.bin
36d9eba9d61c8aee0de88a139198d760b238f87c3c3f02bca6617de733df077b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7164 10192 bytes
font_02_sfnt_off00009434.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9434 4324 bytes