Malicious PDF — malware analysis report

Static analysis result for SHA-256 d96b516d4200f2b8…

MALICIOUS

PDF

76.0 KB Created: 2021-01-03 03:40:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7932e2a534c270ef66f7e0d9a3f1a768 SHA-1: e33530f3c6b757116bb2cb65e2d9cfe5e38fd489 SHA-256: d96b516d4200f2b86458600be12578eea47369469781ad8e5888832970ea4622
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or redirection scheme. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The presence of embedded URLs and the 'SE_DOWNLOAD_BUTTON' heuristic further support a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/aws?utm_term=whatsapp+video+status++punjabi+2018+hd PDF link annotation
    • https://niwonuruvi.weebly.com/uploads/1/3/4/7/134767359/7813749.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471948/normal_5fbf0eb6bbd63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411479/normal_5f9514f4921ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426060/normal_5fe29c0de4cb7.pdfIn PDF document text
    • https://cdn.sqhk.co/pipujevi/efy9zhf/65746937.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387711/normal_5fcbbaf69a1a6.pdfIn PDF document text
    • https://pozivikebesar.weebly.com/uploads/1/3/4/7/134759309/4b2362d7b19fb6.pdfIn PDF document text
    • https://wesaxewotivaf.weebly.com/uploads/1/3/4/5/134578523/726593.pdfIn PDF document text
    • https://pedamajemekiju.weebly.com/uploads/1/3/1/3/131380885/2157180.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368501/normal_5fa9cff5ed380.pdfIn PDF document text
    • https://cdn.sqhk.co/tukawezezo/hia0y9G/68621207500.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389606/normal_5f98cc2541c51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407060/normal_5fa89ca4074da.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ed30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED30 5728 bytes
SHA-256: d8ae44b6402f74562be72449d6b71cd4bb119d7992db43f74be72cf34f3b5695
font_01_sfnt_off000100c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100C2 9992 bytes
SHA-256: b4375b46e61a7ae671d901681fbf9a20b99dd200723fd6875a29dbca54fefef1

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