Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a45d9f76de4c3a4…

MALICIOUS

PDF

93.4 KB Created: 2020-12-19 22:34:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: ec4276365ac3b8cd30efaee527bedb70 SHA-1: 72354716cc7d96fa988f82a4feb7e0b987474826 SHA-256: 4a45d9f76de4c3a478633405203aca15c619ba5d9f1609f339b0920ba9a3130e
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL pointing to a suspicious domain that is likely used for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafficel.ru/aws?utm_term=wow+barrens+leveling+guide+classic PDF link annotation
    • https://renobikedasel.weebly.com/uploads/1/3/4/8/134897329/mevepufubekebulawero.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/e4db5a70-56c0-48fa-9c3a-1c5dc47ba8fd/95264850349.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/approved_house_plans_south_africa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4c51f8787e8798984abf3/t/5fce94846b21c834ef461d92/1607373957638/top_prison_escape_hollywood_movies.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/amazon_chime_link.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc35270bdb33045eed1c2ec/t/5fc68cecf8cdb769c6c7fd01/1606847724919/city_builder_airport_building_construction_games.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/ragnarok_m_acolyte_solo_leveling_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fc71e70-63c2-483d-b36c-7c66c3aecc10/zabiberajulodinib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/406ea8bf-c708-4593-9e1a-2c285ef4230d/fitenunot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1effe1f7-1e99-4711-9072-bd931b505d34/sepenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d95ef070-77bf-42b2-9d6b-916b6ea69523/solar_oven_research_paper.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/the_ultimate_guide_to_the_presidents_wiki.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011b7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B7A 5216 bytes
SHA-256: f4560284fa5688e73a9f60028f81ad5a278f0fec9d5f8d556068b41608d265e8
font_01_sfnt_off00012d43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D43 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off000135d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135D1 10616 bytes
SHA-256: 1b2ddcdd9f163db5198f895a318aab54441f43717d64fe322a9e1b1f84dda95c
font_03_sfnt_off000159f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x159F1 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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