Malicious PDF — malware analysis report

Static analysis result for SHA-256 47547386406ab475…

MALICIOUS

PDF

60.9 KB Created: 2020-12-21 03:49:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e367125016e115535cf1c27208b30746 SHA-1: d24b2e73f9e8d4c584f631191c6c960a08541552 SHA-256: 47547386406ab475f284cb326fda2a52f83787fd7c34bf42256ac901703e5a9d
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as Pdf.Phishing.Trojan. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lure users to potentially harmful content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://trafftec.ru/strik?utm_term=bazooka+boy+unblocked
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/rakuvudabasim-gubaxevuruwojix.pdf
    • https://rofaxebawo.weebly.com/uploads/1/3/4/7/134750080/4670357.pdf
    • https://static.s123-cdn-static.com/uploads/4501054/normal_5fcbaa8180e47.pdf
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5fd2a6853df3a.pdf
    • https://cdn-cms.f-static.net/uploads/4386822/normal_5fc1d8b07163e.pdf
    • https://jopojikifereter.weebly.com/uploads/1/3/4/5/134519769/wumibeburofa-runupiwemi.pdf
    • https://cdn-cms.f-static.net/uploads/4375886/normal_5f98a0f0bab84.pdf
    • https://zadopelujon.weebly.com/uploads/1/3/4/8/134884154/mifetirase-lomidu-relepowozoluw.pdf
    • https://nuzewive.weebly.com/uploads/1/3/1/1/131164046/xofojek.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/87b66721-9776-43f5-8b62-335d8889b9e7/scavengers_guide_to_droids.pdf
    • https://s3.amazonaws.com/fomudebipefasu/poe_blight_league_guide.pdf
    • https://s3.amazonaws.com/gidibesuxi/luwopodebodozube.pdf
    • https://s3.amazonaws.com/mexavofezoxi/21390680749.pdf
    • https://uploads.strikinglycdn.com/files/371a9ecd-2c3c-411b-9968-81e688c699e4/vepodudonokejazaremetofek.pdf
    • https://s3.amazonaws.com/potofaw/video_star_pro.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b2e2.bin
9917434b8772743154b9ea0a536451de5b421552f4465f8c66987969f6d77b19
pdf-font-stream PDF embedded font (sfnt) at offset 0xB2E2 5064 bytes
font_01_sfnt_off0000c443.bin
933fa2d4427187117a42e239b36c02c848320e74aa21ba486768279effb1c0eb
pdf-font-stream PDF embedded font (sfnt) at offset 0xC443 10104 bytes