Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f8a12c054a8eca…

MALICIOUS

PDF

51.2 KB Created: 2020-08-02 05:42:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82e2a0dd73cd5925a9dc4181b01c090c SHA-1: b8989ed3f25e746521218116982bfe9b7f692552 SHA-256: 84f8a12c054a8eca57460dd2e2787d7a460c6e98d7d2f0e8eb44260b6c7eff07
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL. This indicates a phishing attempt, likely to lead the user to a malicious site under the guise of providing a 'real vocal book pdf'. The file also contains a large number of embedded links to Shopify domains, suggesting a link farm or SEO poisoning tactic to increase visibility.

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=real+vocal+book+pdf
    • http://files.253baseball.com/uploads/1/3/1/4/131483154/jogesetunuj_jalukob_mipamu.pdf
    • http://files.oldstatenisland.org/uploads/1/3/0/8/130814861/bidarisesebazifuxeto.pdf
    • http://files.thecometzone.com/uploads/1/3/1/4/131453252/waxebagax_jenez.pdf
    • http://files.mohlerdance.net/uploads/1/3/2/6/132681657/331296d0f.pdf
    • http://files.essentiallygardening.com/uploads/1/3/1/1/131163960/27e35c80d2aa31f.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3263/files/the_duck_song_3.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8359/files/xuvepejagara.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/22177748647.pdf
    • https://cdn.shopify.com/s/files/1/0432/4232/4125/files/90044069244.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5130/files/48316200320.pdf
    • https://cdn.shopify.com/s/files/1/0434/5918/2745/files/the_ultimate_guide_to_divination.pdf
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/46330743501.pdf
    • https://cdn.shopify.com/s/files/1/0430/9437/6605/files/vezofogemazuninupamop.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/kevemovi.pdf
    • https://cdn.shopify.com/s/files/1/0438/3493/3398/files/vovojonarogaroxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5771/7152/files/senotekepakawatawuviwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5351/files/61914289612.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_off00008a40.bin
927d9c89f49079c1d00a0089cf3b329b70cc4c1d8bab5102c745a4eaa0af3a26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A40 5144 bytes
font_01_sfnt_off00009be7.bin
4b655dd88e8e0dd6909d9f52b168a7f0c6c1fc49a7a420b3c8fe920df2c28412		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BE7 10512 bytes

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