Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f7ed2740b0061a7…

MALICIOUS

PDF

64.6 KB Created: 2021-01-03 13:46:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 4235d020355109723076c3b1999405b5 SHA-1: 4dd89ad8961b1cb01d16d301e3589378e3a460a6 SHA-256: 2f7ed2740b0061a717138a0983a8133d55c0411ae7d9870f30c2796936fa520f
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains multiple embedded links, with at least one pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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 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.
  • 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://traffmen.ru/aws?utm_term=ashirwadaya+dennam+video+song In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375075/normal_5fadd2fcdca15.pdfIn PDF document text
    • https://nuzixusimupe.weebly.com/uploads/1/3/4/3/134306281/fipebasekupe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367959/normal_5fbb29122fb1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420237/normal_5fa6fdc1d9d5d.pdfIn PDF document text
    • https://balesiloruj.weebly.com/uploads/1/3/4/6/134671801/sadiwe_letoj_fupalajajivifif_zofeveludegal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367277/normal_5fcabbc414831.pdfIn PDF document text
    • https://xexovelez.weebly.com/uploads/1/3/0/8/130813416/raluxebasogu.pdfIn PDF document text
    • https://sasakafu.weebly.com/uploads/1/3/4/3/134371045/sipup.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/fuzafuzeruwit/bootstrap_4_horizontal_form_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c4e370a-3ec9-46d9-b4da-cdf9c6a8e6ba/jupale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc5c8786-6d86-47fd-94b6-9452cedb7a94/bumat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/723f3d09-651b-4f4b-86f0-bd75dd60ea11/vedadojulotabubexenaz.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 1

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_off0000bf60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF60 5452 bytes
SHA-256: 46a993d587f5d2c80c1879fb22d270fba91a81280379c7ed43ac2e479c96ac1b
font_01_sfnt_off0000d1d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D7 10596 bytes
SHA-256: 5adfcb8b1aabc67bfe4f615208550e354ad26fbbe6d3f3a8de964146263b9988

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