Malicious PDF — malware analysis report

Static analysis result for SHA-256 90fc219ad5415a2f…

MALICIOUS

PDF

169.9 KB Created: 2020-11-30 21:05:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2f178e2669847306e475880a045e0b87 SHA-1: 3fdec85b87399ae2e220e96bef473308b21ec7c1 SHA-256: 90fc219ad5415a2f33b9ff53dbe06c0312bc5bca412108e81d08aa4a6e5e3e1c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure related to 'Rocky mountain elementary school longmont' and embeds a URL pointing to a suspicious domain. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the embedded URI is a primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9752

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffnew.ru/strik?utm_term=rocky+mountain+elementary+school+longmont PDF link annotation
    • https://zozovuxogufeduw.weebly.com/uploads/1/3/4/7/134766710/pasado.pdfIn PDF document text
    • https://fufirixosidewo.weebly.com/uploads/1/3/4/8/134868093/monatiboj.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/zalisujezajaje/22773935415.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/56955938316.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/pa_driver_manual_in_spanish.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/26602149159.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4cc09d793648408463e0/1606372545360/32305647202.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dde4403f5353fd9590af/t/5fc173e0fa04221c7156adb1/1606513633944/7026894759.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4460c76f-3747-4ce7-9b58-41d070c21a08/ponufo.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_off00026136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26136 5388 bytes
SHA-256: b137f368a7a6bc1352954a24562a33d3b3bdc950c8baef90561b7531dc72f043
font_01_sfnt_off0002736c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2736C 11440 bytes
SHA-256: 5d500d38445b46afb62b06f1941589a53419175f599e72f41b3b9c6add9b2aab

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