Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe62ed4f007c11cb…

MALICIOUS

PDF

64.3 KB Created: 2020-08-24 10:11:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9591d169a1506b632cdd46b6e3e1ee95 SHA-1: 777e7ea79e848a50c9addd1e10f54baa83d8cff3 SHA-256: fe62ed4f007c11cbaa4500edd23b0cccac5113a4bac93dc61c3db6f55d501cf7
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=zktime+attendance+management', is designed to redirect users to malicious content. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on cdn.shopify.com. The primary intent appears to be social engineering through a deceptive lure related to attendance management software, leading users to a malicious redirector.

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=zktime+attendance+management
    • http://dasomemiw.mdlashesllc.com/uploads/1/3/2/7/132741508/xevekebem_suwurediju.pdf
    • http://mizapib.benjaminbubbles.com/uploads/1/3/2/8/132815787/9388663.pdf
    • http://ranajoxat.joytruscott.com/uploads/1/3/1/1/131163635/9676685.pdf
    • http://files.kybercave.com/uploads/1/3/1/6/131637016/gutovevubejeke.pdf
    • http://files.reflectivebounce.com/uploads/1/3/0/7/130740573/683693.pdf
    • https://cdn.shopify.com/s/files/1/0439/4621/3544/files/read_text_files_java.pdf
    • https://cdn.shopify.com/s/files/1/0436/8980/3941/files/zawizewebe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5528/3352/files/photo_background_apps_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0440/4330/5110/files/15128088914.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/58335085815.pdf
    • https://cdn.shopify.com/s/files/1/0430/2694/0067/files/brew_cask_install_docker.pdf
    • https://cdn.shopify.com/s/files/1/0436/9491/5738/files/piduwejofazadofapipoko.pdf
    • https://cdn.shopify.com/s/files/1/0430/3290/3833/files/tekomuzitibubenugosezu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2137/7434/files/19002739667.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/koxoxipawomimujejen.pdf
    • https://cdn.shopify.com/s/files/1/0429/7038/2485/files/99372108039.pdf
    • https://cdn.shopify.com/s/files/1/0437/1814/8261/files/zipigikajonu.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_off00008fca.bin
11c8e4f6466c6494904e7078bfd44e4a75f1431546c8597bedb0c7c279838c74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FCA 7332 bytes
font_01_sfnt_off0000a8a8.bin
75bc7ca7e5b9337d304bf2c225d42f5bb3f6d556730d7c8624d3a9de0cc91594		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8A8 4976 bytes
font_02_sfnt_off0000b97e.bin
36ffb6923249fadd3b4c5f7ce71efff02f59364a74e861cce06d5af79c03a0b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB97E 10540 bytes
font_03_sfnt_off0000dd94.bin
ca1d28e69e246204553507df9d50390fff8e10a1be94a29a353c123cf63cb936		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD94 16292 bytes

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