Malicious PDF — malware analysis report

Static analysis result for SHA-256 83ee2bcf45a49fd6…

MALICIOUS

PDF

69.4 KB Created: 2020-11-10 12:29:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: f9e20ac7776c8fc0bdb6a40c66c5de02 SHA-1: 17f3ca937e1cbe5f9eb98abcbba368ab53fb9b29 SHA-256: 83ee2bcf45a49fd641ec1bd52f01e4200665398299cdcbecf826be00fe5ef9d4
252 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, indicating it's designed to redirect users to harmful content. It functions as a link farm, containing numerous embedded URLs that point to potentially malicious or disposable hosting sites, aiming to lure users into clicking through to malicious destinations. The presence of a known malicious redirector URL further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffking.ru/123?keyword=watch+spider+man+free+online+2002 In PDF document text
    • https://razisosip.weebly.com/uploads/1/3/0/7/130739291/duduv_govidafil.pdfIn PDF document text
    • https://sixapinipuso.weebly.com/uploads/1/3/1/3/131384402/gajiresokasunixitine.pdfIn PDF document text
    • https://lajoreruxox.weebly.com/uploads/1/3/4/5/134588124/fanebekiwukuz.pdfIn PDF document text
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/jakejodezepulo.pdfIn PDF document text
    • https://fawibilewitowo.weebly.com/uploads/1/3/4/5/134585577/b5c14ae1.pdfIn PDF document text
    • https://jufavufopu.weebly.com/uploads/1/3/4/3/134340263/gimoja-soweloze-gowenev.pdfIn PDF document text
    • https://tenasusuboziwid.weebly.com/uploads/1/3/4/3/134349012/be59a.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/59011aa1-896f-4823-bf78-6251071f186e/lorejitosejetuxaxaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11a4bbae-396c-4757-9408-87adf632a229/makitarup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a27e351d-f7e5-4dee-9e2c-b6f8fa412c5c/69718863323.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7eab64c-814e-42aa-a5f8-90ec2dd791c1/xomijafomom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c38dbfb-e13f-49fc-91a4-7ae882a8a77b/xagolukaru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99fc9a55-0225-4e42-ad48-c24336f08e6f/pozerizogipiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e06bc0b0-8eeb-4cee-b250-25b79180b48e/80191351907.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_off0000d063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD063 5684 bytes
SHA-256: bba528b0ee40ca0f6ee8b091bfcf9ca40acc1c9984bc255c4e1f828021d5849b
font_01_sfnt_off0000e399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE399 11016 bytes
SHA-256: 650fd5a7be696171fcf346caa9dcda6a969d37ae562ac76aac6febdbf2d6756f

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