Malicious PDF — malware analysis report

Static analysis result for SHA-256 afc1f1253d037e26…

MALICIOUS

PDF

45.3 KB Created: 2020-08-21 14:25:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b898717f4398eec2170c0216bed7f804 SHA-1: 3d57067f5a998f61e059b2cea04aae4456f91fdc SHA-256: afc1f1253d037e266b49ddcb6037bf06f9fa2f859512824ebaec4d81d53d4646
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a prominent link to 'ttraff.com', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to turning off Google Play Protect on Android TV, suggesting a social engineering lure. The presence of numerous external PDF links, including one to a Shopify domain, indicates a link farm strategy to distribute the malicious payload. The ML classifier strongly supports the malicious nature of this PDF.

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.com/pify?keyword=turn+off+google+play+protect+android+tv
    • http://files.nomadwarriors.com/uploads/1/3/0/7/130775475/9161415.pdf
    • http://files.kirtansongbook.com/uploads/1/3/1/3/131381772/pulexagiji-kilusafupep-vumepusex.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/67728994744.pdf
    • https://cdn.shopify.com/s/files/1/0436/0821/1619/files/riwakifetowusenevegaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/3593/4370/files/34305057524.pdf
    • https://cdn.shopify.com/s/files/1/0437/8276/6750/files/zojipomasipawixejoxet.pdf
    • https://cdn.shopify.com/s/files/1/0433/2702/9400/files/lexanuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/apprendre_a_lire_une_partition.pdf
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/foxpdf_coreldraw_cdr_to_converter_3._0.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/92161478626.pdf
    • https://cdn.shopify.com/s/files/1/0433/8899/3699/files/76127739770.pdf
    • https://cdn.shopify.com/s/files/1/0432/4353/6541/files/anghami_hack_apk.pdf
    • https://cdn.shopify.com/s/files/1/0432/8262/8766/files/xupar.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_off0000663e.bin
613a4016283971ad6f4152c5305635390f76fbd79daaa4ba3a68a32dd63e5c1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x663E 5136 bytes
font_01_sfnt_off000077d6.bin
027a897bd21d3fa1f0e366efe846698239c3082b04cb18a9a181e80177c3fcf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D6 10060 bytes
font_02_sfnt_off00009a4c.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A4C 4324 bytes

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