Malicious PDF — malware analysis report

Static analysis result for SHA-256 e56b5d66484d1d6d…

MALICIOUS

PDF

39.9 KB Created: 2020-08-24 10:05:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96457d4e083acfc30484953c2bbf84e7 SHA-1: 826d5e1c69142691f29e52f0db1e3af78dd6e885 SHA-256: e56b5d66484d1d6d954653cce48c695de8ab210223142dcfcd7febfa8767e0ee
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a 'Windows 10 preparing automatic repair' notification. This heuristic, combined with the presence of a large number of embedded links, suggests a phishing or scam attempt. The document body itself contains obfuscated text and URLs, further supporting the malicious intent. No scripts were extracted, limiting the analysis of specific execution behaviors.

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.com/pify?keyword=windows+10+preparing+automatic+repair
    • http://xisut.boonennedroughtmasters.com/uploads/1/3/0/7/130738764/76f3a33ad0577.pdf
    • http://files.designsbycarolann.com/uploads/1/3/0/8/130814513/ac27058e6e8.pdf
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/49920769176.pdf
    • https://cdn.shopify.com/s/files/1/0429/4764/1511/files/37017639505.pdf
    • https://cdn.shopify.com/s/files/1/0430/3156/0354/files/69063243787.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/serugevizotafome.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/87933194532.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43545787384.pdf
    • https://cdn.shopify.com/s/files/1/0445/5186/4484/files/nobutosuvufodinetipulax.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0358/files/kotonomome.pdf
    • https://cdn.shopify.com/s/files/1/0428/9013/3663/files/niroma.pdf
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/86498565414.pdf
    • https://cdn.shopify.com/s/files/1/0432/5661/0969/files/purple_iptv_play_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/7814/7491/files/metetixanovaximozefalov.pdf
    • https://cdn.shopify.com/s/files/1/0438/0157/5586/files/two_wheeler_chassis_dynamometer.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_off00005d95.bin
6dba37aca78caae04209e56321269fa344437bef2dce87ee7ae3f5c25eabe5da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D95 5660 bytes
font_01_sfnt_off000070d3.bin
828039253ff44230caee8eb6d79669040c14795fb54189fa92925ec15578137b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D3 9840 bytes

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