Malicious PDF — malware analysis report

Static analysis result for SHA-256 06586d2b23119b97…

MALICIOUS

PDF

77.7 KB Created: 2021-03-06 15:10:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 14ae42b277d5d5d5b399634aff27438b SHA-1: e08b1bb4249a38eac45067b9c8ac44ff389063d0 SHA-256: 06586d2b23119b9787ebfa2f3c804399687db233926a3440fed2251a4c063537
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a primary focus on a link disguised as a job search query. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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.
  • 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://fokemale.ru/123?utm_term=what+information+technology+jobs+are+in+demand+in+australia PDF link annotation
    • http://vadosixajobirug.mygamesonline.org/nokowurigosiwe.pdfIn PDF document text
    • http://sks-expertiza.ru/beduvonumafexiscn1yz.pdfIn PDF document text
    • https://nukoxola.weebly.com/uploads/1/3/1/3/131380146/kufizujenedamipabes.pdfIn PDF document text
    • http://gagivukamuw.getenjoyment.net/lamekalirumebobedagibasu.pdfIn PDF document text
    • http://hydrofthol.space/15505555331r1z1x.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/UuidhfA/15587573558.pdfIn PDF document text
    • http://airet.space/how_to_connect_logitech_k400liow7.pdfIn PDF document text
    • https://cdn.sqhk.co/butofelo/jVRjghb/airline_tycoon_cheats.pdfIn PDF document text
    • https://zavigajigufuf.weebly.com/uploads/1/3/1/6/131637719/mofuluwawo-gipoxirawope-tamizoraro-sepofivanosap.pdfIn PDF document text
    • http://jewlgems.com/dyson_cinetic_big_ball_animal_allergy_vacuum_for_saleg3oha.pdfIn PDF document text
    • http://olx-delivery.cc/price_of_electronic_choke41kyc.pdfIn PDF document text
    • http://copytoshka.ru/vuwasimarelezuwerawosefnm2e.pdfIn PDF document text
    • http://ipoteka.net/lowurosi269l.pdfIn PDF document text
    • http://vidclips.design/lavasezijebeluzufalaxikaedkcc.pdfIn PDF document text
    • http://lnstagram-office.com/what_constitutes_service_of_process_in_illinoisysmtc.pdfIn PDF document text
    • https://cdn.sqhk.co/pulovafafita/hcjajd1/pulse_oximeter_cvs.pdfIn PDF document text
    • http://organicnu.info/onan_microlite_4000_parts_diagramsqgsj.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/63c70b27-00cf-4643-86b1-d675f7920250/citizen_e820_movement_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/629a942c-3238-480b-8802-fc2b48d9a0d7/mr._coffee_coffee_maker_5_cup_jwx3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fe317bb-a9a7-4767-8889-58252499e300/7777163414.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd1fda35-7588-4d06-bfcb-f207a171439c/41056285498.pdfIn PDF document text
    • http://liroporuki.myartsonline.com/namowo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE74 5764 bytes
SHA-256: 33cda16fe6928035904a8af94c3d9b11286ceaf21926bbb71d28543599c2b762
font_01_sfnt_off000101ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101FF 11348 bytes
SHA-256: 72ca9fc94becff1373293e2a283277a96c84da355dd585b17c0794f6a90873cd

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