Malicious PDF — malware analysis report

Static analysis result for SHA-256 448f26434452de16…

MALICIOUS

PDF

80.8 KB Created: 2020-12-19 01:40:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: efc0834c9ff9084bea404006f0f2f7cc SHA-1: 719156a6d5da1f0f6e17b9a3268d7c13c3f0c402 SHA-256: 448f26434452de1690103da0b947e6ca84e4d3ed30ebb816b07c8bb917794f3f
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting an attempt to manipulate search engine results or redirect users to malicious sites. The ClamAV detection and ML classifier also indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/123?utm_term=5+pin+bowling+calgary PDF link annotation
    • https://fidinavaxevipew.weebly.com/uploads/1/3/4/8/134876378/juzovada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410448/normal_5fa0d31f3381c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383302/normal_5fa6279af2c36.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/2995731.pdfIn PDF document text
    • https://wetejitaxazis.weebly.com/uploads/1/3/4/3/134306742/8198b.pdfIn PDF document text
    • https://josugonu.weebly.com/uploads/1/3/4/4/134488469/7a70e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/the_return_of_billionaires_club_2.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/zarchiver_app_for_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/wurulusomusala.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/fawukumiluvujiluwamusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/642dcd1c-b7ed-4680-9292-7921a75d071c/xorosimotapopapobet.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/69190121095.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0fd1dae-cc00-4ccd-bad9-b46fed70cccd/jerobibajituzes.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_off0000fee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE0 5284 bytes
SHA-256: ab3221ab4f09a3d96a6835e90b645ab6b35e46a228e86a7d3cf2072e8e216b81
font_01_sfnt_off000110fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110FE 11364 bytes
SHA-256: 7a44c8cce8b1f6ae760d725d727f1124e2568ece02c3e3e1a914690115b4b26a

Open this report in the interactive analyzer, or submit your own file for analysis.