Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c1fb553113a1291…

MALICIOUS

PDF

46.0 KB Created: 2020-08-14 16:53:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffb6623b648558e7f453f7d2fb37cc04 SHA-1: ce8f50d4966e17515754e6b3c06dae8e39a94584 SHA-256: 0c1fb553113a12918d5379ddcd22b79ac191ebdf69b24a9bb79ed74fec45673e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits malicious behavior by embedding a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The primary malicious URL identified is https://ttraff.com/wb?keyword=gli%20indifferenti%20alberto%20moravia%20pdf, which is flagged as a known malicious redirector. The document's structure and the sheer volume of links suggest an attempt to exploit search engine algorithms or trick users into visiting harmful content.

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/wb?keyword=gli%20indifferenti%20alberto%20moravia%20pdf
    • http://puzawasef.cellgenetherapy.com/uploads/1/3/2/6/132681946/2060800.pdf
    • http://files.forica.org/uploads/1/3/0/9/130969477/zisapuvinijida_dojotefawaruvi_nabisitel.pdf
    • http://files.zippytotz.com/uploads/1/3/0/8/130814043/2794900.pdf
    • http://files.anointedpropheticartist.com/uploads/1/3/2/7/132741225/sokob.pdf
    • http://files.zach-koch.com/uploads/1/3/2/7/132740536/98cdef84b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/5474/3200/files/dijonu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0172/4577/files/5375866905.pdf
    • https://cdn.shopify.com/s/files/1/0453/4956/8667/files/25533419940.pdf
    • https://cdn.shopify.com/s/files/1/0433/7532/9441/files/life_of_luxury_slot_machine_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niwaxesajikibulunetegidu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2192/4514/files/arduino_programming_tutorial_from_tutorialspoint.pdf
    • https://cdn.shopify.com/s/files/1/0428/3321/5654/files/ford_f53_motorhome_chassis_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/0506/7943/files/34031921318.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8333/files/33527791149.pdf
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/3312065712.pdf
    • https://cdn.shopify.com/s/files/1/0432/2718/5316/files/tales_of_vesperia_guide.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073fe.bin
4dd44d76217d46d2ee80e5b8a5510337fecb63e1a9219dd2143258a7fdbd9fcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73FE 5240 bytes
font_01_sfnt_off000085b9.bin
72d9c647dbec8e18e3397670a3fb1a4755a1e782ed89676d1717638ddbf6c074		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85B9 10888 bytes

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