Malicious PDF — malware analysis report

Static analysis result for SHA-256 aad0297fdc58887c…

MALICIOUS

PDF

112.4 KB Created: 2021-03-17 05:56:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 48e5fa15d831f3b6ba1d477e219db61c SHA-1: 724e93c8ab6515c979ce9d639812d3122d22a65b SHA-256: aad0297fdc58887c8f52c40ecd2714ebfd3ba73532c16fc5c6267611623deaaa
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. While no scripts were explicitly extracted, the PDF structure and embedded URIs point towards an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 6

  • 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.
  • 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://golowaki.ru/strik?utm_term=what+does+yahweh+mean+literally PDF link annotation
    • http://faceskinagainbeauty.xyz/imek_mcqueen_film_indirpy98x.pdfIn PDF document text
    • https://pudonaneguk.weebly.com/uploads/1/3/4/7/134767047/8fb22fb18d4f6.pdfIn PDF document text
    • https://virataxutepubom.weebly.com/uploads/1/3/0/8/130874282/fewupabapopava_raledijatabo_xodik.pdfIn PDF document text
    • http://rezltml.xyz/curse_of_strahd_5e_freeyftf4.pdfIn PDF document text
    • https://bubosetew.weebly.com/uploads/1/3/4/5/134515161/1167357.pdfIn PDF document text
    • https://koxofekidoponu.weebly.com/uploads/1/3/3/9/133997415/rovonoxinovilavitine.pdfIn PDF document text
    • https://nelurorinubix.weebly.com/uploads/1/3/1/3/131384252/gonejisawurudak.pdfIn PDF document text
    • https://magajasomit.weebly.com/uploads/1/3/5/3/135388043/2860759.pdfIn PDF document text
    • https://wadaletabuj.weebly.com/uploads/1/3/2/6/132695896/gujed.pdfIn PDF document text
    • https://sowobufujugazid.weebly.com/uploads/1/3/0/8/130873997/gogekajabitufaf.pdfIn PDF document text
    • https://nipukidifa.weebly.com/uploads/1/3/0/8/130873732/b0ba44aa7ac.pdfIn PDF document text
    • https://belukuxar.weebly.com/uploads/1/3/5/3/135312366/5994258.pdfIn PDF document text
    • https://rupanusevufow.weebly.com/uploads/1/3/1/3/131380126/22097bd9aeb9.pdfIn PDF document text
    • http://vekvelo.ru/rugizufifrx9f4.pdfIn PDF document text
    • https://xaroduzorosu.weebly.com/uploads/1/3/1/3/131398324/wamoniguk_naturexitesida_wadorerekadeveb.pdfIn PDF document text
    • http://senteber.site/free_medical_powerpoint_templates_cancerld4l2.pdfIn PDF document text
    • https://fopulowaledini.weebly.com/uploads/1/3/1/6/131637921/42364545c480.pdfIn PDF document text
    • https://sorunamupojiwek.weebly.com/uploads/1/3/1/4/131407183/judunizeziduzasixeke.pdfIn PDF document text
    • https://doruxajowivabog.weebly.com/uploads/1/3/4/8/134870444/94f71936.pdfIn PDF document text
    • https://kedabivaj.weebly.com/uploads/1/3/1/4/131438143/xonokokakegeda.pdfIn PDF document text
    • http://thedouche.xyz/matlab_plot_different_line_stylesycjnu.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://s3.amazonaws.com/dixaleko/zinukusanotulavu.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/esc_guidelines_for_permanent_pacemaker.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16806 5060 bytes
SHA-256: 15f550c54eb9cdcd51b93f1ec8e23e1d6d33f313a5a3f880e8275a66f4999fdc
font_01_sfnt_off00017925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17925 13836 bytes
SHA-256: 9b9026ef5dbe0be760fafdb1139d7ec26932e8ca3e1c24ff7e34a7c6049c4dca
font_02_sfnt_off0001a37c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A37C 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34