Malicious PDF — malware analysis report

Static analysis result for SHA-256 052bc34756106504…

MALICIOUS

PDF

76.8 KB Created: 2020-11-24 20:09:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ed87a5630c8ba76bbc7b8d92f99333c3 SHA-1: 2571abda26234b484ec6852da9f26065f0aa19b2 SHA-256: 052bc3475610650404ad317c4a87b58854c22437428096a15e13277b11d29e6e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URL that likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to a 'Uss enterprise haynes manual pdf'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or downloader attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=uss+enterprise+haynes+manual+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384821/normal_5f8e37e33ef0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393502/normal_5fa627de70dba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383137/normal_5f9521a242c26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383798/normal_5f8c95166a874.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498971/normal_5fb5b7fb3adc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389370/normal_5fb014b83e998.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409813/normal_5fa0f75b01306.pdfIn PDF document text
    • https://vekaluledezo.weebly.com/uploads/1/3/4/2/134235689/womivututo.pdfIn PDF document text
    • https://jowapiwinutakun.weebly.com/uploads/1/3/4/3/134365581/xipudixajed.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/11bbbe6e-5984-4de6-9f4f-472b50b1f00a/staff_notation_for_guitar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/981a18f1-3b06-43c1-ae53-de9a97172512/4461010815.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a308ef3c-8f44-44af-b910-2f44a09297ba/bel_canto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0530ca8e-0eb8-4b38-8a05-6f2fd5def973/rogue_guide_5e_dnd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d72b8d1-620a-4435-9485-2ed240a3e402/594666327.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad2f5201-f62b-47d3-819a-577672368d20/43811796123.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8bc8b7b-1f83-400e-87e6-12f9afb2bc80/fidaluxolivawusa.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f00b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00B 5376 bytes
SHA-256: e105a0183cf7d60e541a6c7143d82c4ada17811c98711e8adc89737ad47128ea
font_01_sfnt_off00010233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10233 10592 bytes
SHA-256: 5c1d6858c5d99e38ed7483cb0888aa99a957d3b46f7fc68924a22b2a8cbad690

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