Malicious PDF — malware analysis report

Static analysis result for SHA-256 adccae411c8e4a6f…

MALICIOUS

PDF

50.3 KB Created: 2020-08-21 18:01:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a41a669513bac89c88359ce6feb1323e SHA-1: 975500d4047a17476e2dff226a09be49b9dd6b84 SHA-256: adccae411c8e4a6f4c0801e6efa6c1ef849b9cfbb4e8d5e3452d5902a9a2f2ba
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL and references 'Boston market meatloaf nutrition information', suggesting a lure. The presence of a PDF link farm heuristic further indicates malicious intent to distribute content or redirect users. No scripts were extracted, but the primary attack vector appears to be the malicious redirector.

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.ru/pify?keyword=boston+market+meatloaf+nutrition+information
    • http://wodadi.rhiannonmaegen.com/uploads/1/3/1/8/131856080/ecde69738b17.pdf
    • http://files.topnamsausage.com/uploads/1/3/2/7/132712093/pofug.pdf
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/4203615360.pdf
    • https://cdn.shopify.com/s/files/1/0430/6577/0135/files/rozelitowuzufalogekoxemo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8507/7405/files/molepemezukusos.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4651/files/bluetooth_file_transfer_medieval_software_apk.pdf
    • https://cdn.shopify.com/s/files/1/0430/5505/5002/files/6485716156.pdf
    • https://cdn.shopify.com/s/files/1/0437/6399/0686/files/apple_watch_series_3_features.pdf
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/88748580264.pdf
    • https://cdn.shopify.com/s/files/1/0428/9455/7347/files/fozagokibeletumajad.pdf
    • https://cdn.shopify.com/s/files/1/0434/7451/8178/files/gaguwulajigemarasubodatox.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/42375312077.pdf
    • https://cdn.shopify.com/s/files/1/0440/8125/0469/files/basic_digital_photography.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008842.bin
b5842304902627c71ff1a3ecf0991708e7a7936f0ea31dd18ff5e830e66fe545		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8842 5024 bytes
font_01_sfnt_off00009939.bin
57329ce186e09500f91fae9612ac219515163d82cb6a39babb4249b887998959		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9939 10136 bytes

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