Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bf24d36b3ff34b6…

MALICIOUS

PDF

68.3 KB Created: 2020-12-24 05:24:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8123c5852ee857c95f2b63c2ccd65448 SHA-1: c40860362b053f936155d1c73a1290dbbb485ae8 SHA-256: 1bf24d36b3ff34b6b621253516b88332ba112a8ab75457ebe81fff66f8d1f380
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, a technique commonly used in link farm or phishing attacks. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. While no scripts were directly extracted, the presence of embedded URLs and the overall structure suggest an attempt to redirect users to malicious sites, likely for credential harvesting or further malware 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
  • 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://traffking.ru/strik?utm_term=high+speed+car+games+free+download PDF link annotation
    • https://cdn.sqhk.co/zijikunu/hRy5hfi/famagajinutidi.pdfIn PDF document text
    • https://norofuzalugegok.weebly.com/uploads/1/3/4/8/134882219/pajagizurujixop-vizijijupal.pdfIn PDF document text
    • https://cdn.sqhk.co/merodobiweve/fzjhhaw/73201415071.pdfIn PDF document text
    • https://norofuzalugegok.weebly.com/uploads/1/3/4/8/134882219/3829377.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381090/normal_5fc5a35c3ddea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392452/normal_5fe2f104a6ad8.pdfIn PDF document text
    • https://cdn.sqhk.co/jozojijejip/RjjZhuS/tagisisasipuzuxago.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452152/normal_5fb4f53fe871c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388040/normal_5fb43a585a9e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369788/normal_5f88c4b2327ac.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/a06792f8-f785-4af7-a0da-eb8836e9d080/vinyl_decal_apply.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f3f280d-b631-425f-abb5-78c7b6d7b9ea/wolf_of_wall_street_full_movie_online_dailymotion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/616f8da7-9d15-4b61-bd49-cebec92129fd/40194163954.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/zewizenajut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d41b45c-520c-46d4-966a-185c41c6b62c/ruzobofekipotuxasiregiw.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 3

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_off0000ce32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE32 5624 bytes
SHA-256: f91fb64c9acc3919481ab5d2708e774e591a0f30941bbcd6e04269009ff0b780
font_01_sfnt_off0000e13f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE13F 10248 bytes
SHA-256: 9faedee61e42ff798601c3b72e7610254e23d3c60608a5bf2673ddc34eb6ed8d

Open this report in the interactive analyzer, or submit your own file for analysis.