Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f7d7e29b62a154b…

MALICIOUS

PDF

33.3 KB Created: 2020-10-07 22:32:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: dac86895059ffa4ff351a85f6a197201 SHA-1: 868e01c477ecc37609fab2b35483eb7eb1c73de9 SHA-256: 4f7d7e29b62a154b8782d54778f12c5d4f7e766834e266247f580d8af19ad285
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector infrastructure, disguised as a camper manual. The ML classifier also flagged this PDF with high confidence. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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=2007+viking+pop+up+camper+manual In PDF document text
    • http://files.smarthvacsupply.com/uploads/1/3/1/8/131856247/wekugipirizajirifa.pdfIn PDF document text
    • http://wofexubup.theicelandproject.org/uploads/1/3/1/4/131406390/4770558.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/29aedb45-0840-4b57-935f-6ca041936a5a/56115404259.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b307f9b-345b-43b6-9176-bb47ccec1123/76250892807.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b75df452-4e04-41b1-9dd0-29a7e35b2aaa/gikuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92e3e686-1bd2-45b8-b769-5efd4671ea0d/zugiwuzububepuzelu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68b31a44-5b0e-4b03-b02b-70ed32dc61ca/9289873174.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e1a3ab0-d5d1-4b73-ad32-b5cc4d9f8fc7/kidufarenatalizokerozubog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89d4e584-c1bb-472d-a6f5-ec2d88b0ea1d/97394870942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6935/3383/files/74359217277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8062/8889/files/merry_christmas_mr_lawrence_trio_sheet_music.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000043fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43FB 5456 bytes
SHA-256: 568d2484693f0d1397fa414e99cc6a4fb3670fea92f10ebc442e36204e1f3ba9
font_01_sfnt_off00005689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5689 10040 bytes
SHA-256: 0b3eade3a61a3c13ff55b0ca8f7197e674a162e57e0b5d21d2c0a50118913dda