Malicious PDF — malware analysis report

Static analysis result for SHA-256 50dec999abdfa740…

MALICIOUS

PDF

47.9 KB Created: 2020-08-22 02:05:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51850e71ee2af795bb53a782161e4bf3 SHA-1: bd5752021b12052bf799bfa65c402ce5c7d7e49a SHA-256: 50dec999abdfa740b6040fcee5e548a8e9f6b9ca80270d1290cf5c4079cfa8d4
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external resources, which is characteristic of SEO link farm abuse. One critical heuristic identified a link to a known malicious redirector at https://ttraff.cc/pify?keyword=debt+snowball+tracker+spreadsheet. The document body, though heavily obfuscated, contains text fragments suggesting a 'debt snowball tracker spreadsheet' lure. The primary intent appears to be redirecting the user to malicious infrastructure.

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=debt+snowball+tracker+spreadsheet
    • http://files.thesamanthajenkins.com/uploads/1/3/1/4/131453989/lefoxaturinodunujogi.pdf
    • http://files.pg3dhacks.com/uploads/1/3/1/4/131437513/puzusifutofufo.pdf
    • http://tewev.studioviemen.com/uploads/1/3/2/7/132740649/vipulod.pdf
    • http://files.rosemacchiusi.ca/uploads/1/3/0/7/130775063/wavikawofifisiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/cateterismo_cardiaco_2020.pdf
    • https://cdn.shopify.com/s/files/1/0437/2958/4293/files/isometric_pipe_drawing.pdf
    • https://cdn.shopify.com/s/files/1/0434/6226/2936/files/67902756648.pdf
    • https://cdn.shopify.com/s/files/1/0432/5202/3458/files/pm_awas_yojana_rural_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/6307/3181/files/75529962810.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/pusexamoxenijenojifetar.pdf
    • https://cdn.shopify.com/s/files/1/0433/8404/5719/files/attitude_and_behaviour_change.pdf
    • https://cdn.shopify.com/s/files/1/0451/5436/9690/files/75357468658.pdf
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/67470494761.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3621/files/16565469497.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_off00006f4a.bin
7ba222b6b2525204e0dd097db06b0f4e6d440731cee57e902dcfbc0078e68722		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4A 5196 bytes
font_01_sfnt_off000080f3.bin
41233345a2123a6d833d055acfe991419dbb9cca50f549e48949089748c01cae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80F3 10544 bytes
font_02_sfnt_off0000a4f6.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4F6 4324 bytes

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