Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e26f02447ec0518…

MALICIOUS

PDF

47.6 KB Created: 2020-08-03 06:43:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d409b8d4e5261f95acce40ab0ec35c8e SHA-1: 9ff4d752a977b0f0f586b16912fed7cf6a78223b SHA-256: 0e26f02447ec0518bae7964b067d6b54900607258b120b154e33a745b7b98f4f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically 'https://ttraff.com/pify?keyword=fury+prot+build'. The presence of numerous links to external PDF files, many hosted on Shopify, suggests an attempt to manipulate search engine results or create a deceptive browsing experience. The ML classifier strongly indicated maliciousness, supporting the conclusion that this document is part of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=fury+prot+build
    • http://files.cedarhillsoaps.com/uploads/1/3/0/7/130776015/dujewopuwiloj_xewizozaxudoja_xuvexi.pdf
    • http://files.brokengroundpermaculture.com/uploads/1/3/1/6/131607063/4709893.pdf
    • http://files.infantswimnpb.com/uploads/1/3/0/7/130739664/zeramulubiniwuv_nubavasof.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/8513/6021/files/16332517346.pdf
    • https://cdn.shopify.com/s/files/1/0434/6760/4128/files/35529788508.pdf
    • https://cdn.shopify.com/s/files/1/0431/6754/7546/files/gamizoniguxotutijogu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8702/0703/files/54713789591.pdf
    • https://cdn.shopify.com/s/files/1/0434/0727/8247/files/xapuwotigewurera.pdf
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/diripekuzew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/judegesuzopo.pdf
    • https://cdn.shopify.com/s/files/1/0441/1670/5432/files/why_is_my_text_red_in_discord.pdf
    • https://cdn.shopify.com/s/files/1/0431/9009/1940/files/7879481692.pdf
    • https://cdn.shopify.com/s/files/1/0433/4452/7511/files/dinebozupijepimazolazuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/5100/8671/files/zeluwapijujaximirizamewiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/pamezem.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071da.bin
45b32eebcfd50974f9662af2b0123b80839f3e55d93208b66e1ee0d4048626a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71DA 4420 bytes
font_01_sfnt_off000080ee.bin
41b0797ef27476fca4a3bc058970db2295ee46f81d62dc417df528a8566cf225		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80EE 10044 bytes
font_02_sfnt_off0000a340.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA340 4324 bytes

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