Malicious PDF — malware analysis report

Static analysis result for SHA-256 747c151addff7194…

MALICIOUS

PDF

123.1 KB Created: 2020-08-10 05:24:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1660b6552e6049f40be117e30e36fff SHA-1: cbaca0a4a6fda59144a84cb8566865df2d3077dc SHA-256: 747c151addff7194ecd27ff8fe2f0f068a66b55154c5f3922489180c9eb563f3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, many of which point to a link farm infrastructure designed to host other PDFs. One prominent link directs to a known malicious redirector, suggesting an attempt to lead the user to malicious content. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=aleister+crowley+books+pdf In PDF document text
    • http://mumame.innovate2educate.co/uploads/1/3/1/0/131070792/jefizebalilejimevu.pdfIn PDF document text
    • http://files.aaagospelminister.com/uploads/1/3/1/4/131438324/jituvulupesaginaron.pdfIn PDF document text
    • http://files.atmorepubliclibrary.com/uploads/1/3/1/3/131378779/remirisiwax-kotofeloxut-kofetevafizu.pdfIn PDF document text
    • http://zemafadom.parkerthepigseries.com/uploads/1/3/1/4/131437462/tavebega-sotazebus-xirofugiwave-jopeje.pdfIn PDF document text
    • http://files.healingwiththeta.com/uploads/1/3/1/4/131453522/6656992.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4988/5606/files/69209112603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6090/1528/files/opendns_dns_servers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9526/1348/files/62418429848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1606/1091/files/lijajatinowamimivede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0461/7119/files/pevojatidekajizezekor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/zegamekofotoleradimijuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4433/8854/files/30259347241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/nugap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6783/4517/files/digestion_of_carbohydrates_in_humans.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019197.bin
0c580b14a06946022c598cef633af91f3043205064cf5f21ec84593e3924cc94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19197 5324 bytes
font_01_sfnt_off0001a3d7.bin
2db4b7b548589e68e26c051e202ad0e6401d5a373196897ef54a87265a841175		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A3D7 11052 bytes
font_02_sfnt_off0001c997.bin
51b8d4c4f17389d80b23040d591c0dccb099bca9103ea84f58116e310badbe13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C997 16088 bytes

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