Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e035c6f73b66325…

MALICIOUS

PDF

46.5 KB Created: 2020-11-02 13:41:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63708bca47ceef939372fff5065cf7a7 SHA-1: 968288da2346be6a0747e27af8d3802f3e12f2cf SHA-256: 6e035c6f73b66325b39666d5cab30b9efeeec8d8ea68158212c233b38502ba70
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious due to its structure, which includes a large number of embedded links. One of these links, 'https://cctraff.ru/strik?keyword=los+errores+de+los+testigos+de+jehova', is flagged as a known malicious redirector. The document appears to be a link farm designed to direct users to potentially harmful websites, masquerading as content related to religious topics.

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://cctraff.ru/strik?keyword=los+errores+de+los+testigos+de+jehova
    • https://ladofozaser.weebly.com/uploads/1/3/4/3/134334290/1969539.pdf
    • https://vikumeniwexawud.weebly.com/uploads/1/3/0/9/130969440/saganan.pdf
    • https://morurotefat.weebly.com/uploads/1/3/4/3/134317018/gesoximifapaj.pdf
    • https://kagadema.weebly.com/uploads/1/3/4/4/134456650/rivaduzute-dibeg-kivasolonuxoko-safid.pdf
    • https://rosuxemu.weebly.com/uploads/1/3/0/7/130776582/xipalokiburol-kigewilujusibi-niradadug.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0505/0990/6084/files/saradomin_guide_solo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0600/9255/files/xalunatijavujuvuriniw.pdf
    • https://cdn.shopify.com/s/files/1/0503/5468/4072/files/45881968147.pdf
    • https://cdn.shopify.com/s/files/1/0500/0524/6112/files/to_kill_a_mockingbird_questions_and_answers_chapter_1.pdf
    • https://s3.amazonaws.com/degerutisig/gajupazotalove.pdf
    • https://s3.amazonaws.com/tetazino/lisejetuw.pdf
    • https://s3.amazonaws.com/kokesatodixon/duvuledukoneni.pdf
    • https://cdn.shopify.com/s/files/1/0268/7310/2506/files/pisixexukusu.pdf
    • https://cdn.shopify.com/s/files/1/0481/5644/2777/files/just_circular_2020-20.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_off000074e2.bin
a259bd301153b367697d4521470b4b4fabc3c9d8dc669b2ba768d1e7f68a748e
pdf-font-stream PDF embedded font (sfnt) at offset 0x74E2 5164 bytes
font_01_sfnt_off00008677.bin
272b15d0e2f42222f8a284130dc26d78d9860c59cb5d53667215b8409f687e7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8677 11296 bytes