Malicious PDF — malware analysis report

Static analysis result for SHA-256 72d92717a882dac8…

MALICIOUS

PDF

74.5 KB Created: 2021-01-06 14:31:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 650a2b8c5f03c06e6cf6296bfbb248a6 SHA-1: 78d3c5943d799dfca441189e8873ecbf86548690 SHA-256: 72d92717a882dac83ac5fb57f63920e5052d7ad15920571778ef1c8fef898ca0
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, identified as a link farm, directing users to potentially malicious websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to compromised or malicious content.

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://traffset.ru/123?utm_term=find+the+emoji+answers+movie+night PDF link annotation
    • https://gubaxuxozixiviw.weebly.com/uploads/1/3/1/3/131383744/3820326.pdfIn PDF document text
    • https://cdn.sqhk.co/miviluwulux/bhahdij/download_world_of_dragons_simulator.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453730/normal_5ff412b14ad46.pdfIn PDF document text
    • https://cdn.sqhk.co/pofifarim/dhdggqg/88119742748.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383568/normal_5fee0de80db87.pdfIn PDF document text
    • https://zedimubaxujejit.weebly.com/uploads/1/3/4/7/134715534/laniwevok-zupukari.pdfIn PDF document text
    • https://povizizumor.weebly.com/uploads/1/3/4/6/134636509/cf21502f187.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/45ddec2b-f4a3-49dc-aa4c-a17f87dc8636/savedavekuxeredev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/690ada04-ce11-4f9d-ac43-bbc87b0f0e19/putitulabevekelevonobol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/122ca0e0-a959-4d7d-8485-804a16a6dc58/90316812347.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/dopomadixixe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b74d7f86-4ee3-46ed-a729-c181a97a3ed7/400_grams_to_pounds_baby.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e91c81df-714a-4a9f-ab51-eb92a220433a/rususejaxawezuva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c2c6536-543c-46e9-a071-808844140353/tisapawoso.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD874 3656 bytes
SHA-256: 38ca959a22c9978af7e49d0681804bb33f4a8f710dd24fa00d6267caade7c070
font_01_sfnt_off0000e588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE588 5392 bytes
SHA-256: ed5f57ae735650dd077964553561e63e27dd60607dde109b556035967243f40b
font_02_sfnt_off0000f7cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7CB 10732 bytes
SHA-256: eae0ce46a85d83edc08ac1aef2ca2b34fe20445846e2bc61e608552435c0eae5

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