Malicious PDF — malware analysis report

Static analysis result for SHA-256 284593189aa473c0…

MALICIOUS

PDF

67.0 KB Created: 2020-08-11 20:30:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b708f4beef5be54aa58cb62254a3b05f SHA-1: cf926356397cc21ba2daccde29d1e5e823318238 SHA-256: 284593189aa473c08002f9f146de4a961735686471d2cba47f0496fdcd193494
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.cc', which is flagged as malicious. It also hosts a large number of external PDF links, many of which are hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure the final destination. The document body contains obfuscated text and the malicious URL, indicating an attempt to lure the user to a harmful site.

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.cc/pify?keyword=moving+coil+voltmeter+and+ammeter+pdf
    • http://files.recoverycafejc.org/uploads/1/3/0/7/130775018/6043567.pdf
    • http://piwebak.coloresalonstudio.com/uploads/1/3/1/8/131871699/tuxirijategope_xidipasuriwa_motadidosakiw_gixazu.pdf
    • http://safanuta.ottshottcreations.com/uploads/1/3/1/4/131438572/5fb65ad29.pdf
    • https://cdn.shopify.com/s/files/1/0430/3080/6679/files/85194335461.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2934473971.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6261/files/1975_cutlass_supreme.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/63478601318.pdf
    • https://cdn.shopify.com/s/files/1/0429/3964/6108/files/vidazugexebojaku.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9461/files/16787345273.pdf
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/42993503510.pdf
    • https://cdn.shopify.com/s/files/1/0428/0261/0335/files/61872899097.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gekisemegudifusoledo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/86464127498.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/84966555417.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/typing_books.pdf
    • https://cdn.shopify.com/s/files/1/0434/1370/0764/files/manitalebumixidixora.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_off0000c8f3.bin
97058906291a3d4495645de57b607babab3bfabba03c50fdffa876441a0d0b58		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F3 5364 bytes
font_01_sfnt_off0000db25.bin
4c4ab9e1ca457f24c41847fd2df5ff840ee09790cdea1c5096529af77f6d2085		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB25 10540 bytes

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