Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2dc037010a434ff…

MALICIOUS

PDF

147.4 KB Created: 2020-12-30 14:55:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: db537a8a6ab20948a60fba9959bb2669 SHA-1: 32de5bdc3365d6d1c749b7a496d3c129d19d516e SHA-256: e2dc037010a434ff36a9f1e2953123cc1a5ea7dba4b31de40170bc4e10ed1de1
184 Risk Score

Malware Insights

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

This PDF file contains multiple embedded URLs that redirect to a link farm, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious redirector designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/strik?utm_term=gorillaz+characters+in+real+life In PDF document text
    • https://cdn.sqhk.co/lejukujegomi/C5gfyhC/turbo_card_login.pdfIn PDF document text
    • https://vedabigejiko.weebly.com/uploads/1/3/1/4/131438046/e7bd111eb83ff.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/bakobiregux.pdfIn PDF document text
    • https://sitepofom.weebly.com/uploads/1/3/1/4/131438718/a5f71b13420bb6.pdfIn PDF document text
    • https://rikurifijuse.weebly.com/uploads/1/3/4/6/134681474/2743582.pdfIn PDF document text
    • https://pinoxelu.weebly.com/uploads/1/3/4/1/134108818/wasuferolal-votizixiperadek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428329/normal_5fa639c3a0f14.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/b9ge2bl/folibame.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/kukagonuwusanukul.pdfIn PDF document text
    • https://cdn.sqhk.co/sepunaro/ehf1X4b/juparemuxosufizu.pdfIn PDF document text
    • https://cdn.sqhk.co/fabupiguboxa/iifigCc/lifeafter_game_profession_guide.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/143564aa-24f4-46e4-91f8-1e3b0e090c27/88562651316.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03d0f89f-ccd3-48a1-9059-bc16be760dbc/rufovedirokoxaloxabu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58ff1a9b-c514-4612-a270-ebbc6b12f7cb/37548239032.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001ca43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CA43 6588 bytes
SHA-256: b3260a8b27c40a1c9408c40b3dcfb9ec9ded560232013cbc1ca8de37ebb5a831
font_01_sfnt_off0001da8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DA8C 3436 bytes
SHA-256: d822e6563c97622c4171feaa966778ec2a1dfc9c9ad16f81933e15e69feafe9e
font_02_sfnt_off0001e6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E6E6 5052 bytes
SHA-256: 0985a20a7db46890f98a6fa023cd53208a303517c977bf593031f2735ab0406b
font_03_sfnt_off0001f80b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F80B 2456 bytes
SHA-256: 750a545c896b67af105c7e9c1702776db8d21c5ef5e14abd9c658ffc9a57c7a2
font_04_sfnt_off000202e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x202E6 13168 bytes
SHA-256: 4fe2ad9d59b452a187bd70e3532465b325406ccf606ca1768c78060689e7fd5d
font_05_sfnt_off00022e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22E17 6448 bytes
SHA-256: d90f9bba78b5aef9eb0e17e599697cb2acbbe41b98751267d55bf0eea77d2fb7