Malicious PDF — malware analysis report

Static analysis result for SHA-256 04aaf708c70acd6c…

MALICIOUS

PDF

84.1 KB Created: 2021-05-27 23:32:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d0b4d68d2dce22c16d7daa38567703a2 SHA-1: 53bc6b7f46aada1208cab7af3ae2e1402ad8f80e SHA-256: 04aaf708c70acd6c5258c928727ab8e7c471d83ee7ba7d79914c43457cd6419a
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • 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.
  • 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://jumiwimov.ru/strik?utm_term=gunblood+unblocked+games+66 PDF link annotation
    • https://static.s123-cdn-static-d.com/uploads/4458827/normal_60aff5c73a3b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451970/normal_600c8d60d70b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446158/normal_6063b801188c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445534/normal_6019bab671d8b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481516/normal_5fe5db1c76ef2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460247/normal_5fe23ddd7776b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485443/normal_606a203c3ba9c.pdfIn PDF document text
    • https://vozedebilonede.weebly.com/uploads/1/3/5/3/135333302/xabozizegowofodufune.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369495/normal_602b3f8cc673f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375073/normal_5ff8e57c206d0.pdfIn PDF document text
    • https://samomalekadoj.weebly.com/uploads/1/3/1/4/131438786/2022149.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464874/normal_5fd15928e6b52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383695/normal_5fe982e63b96f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388833/normal_6065f1d0274b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478687/normal_602215d3128b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373281/normal_6053dea232f81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459035/normal_603a42f4e3d9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386333/normal_60602a1fe6dd4.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/89dbd5fe-5d74-4c0c-8d51-1f8d446e7074/23457033153.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f04100dd-9b68-4b27-a868-511ea0ffa525/51485501489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8608acb-a5c9-4562-a085-f2e6a3fadaef/bogamotuzowofef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/082085ea-844a-4e0c-9fb0-a6fdf395e070/pavemanu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fe5e65b-33ba-432e-9192-94645e107910/2020_lexus_rx_350_f_sport_white_red_interior.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_off00010b77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B77 5552 bytes
SHA-256: 109865e921de1e77904a45f2f7cfdc4081e750c1fe3a31e53e12704823b6161f
font_01_sfnt_off00011e4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E4E 10768 bytes
SHA-256: 9a0fba8229da50980699865da7b0fbdf0bf01e5bef4343a0b2a40f12c1d3078f

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