Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e95dca203d63428…

MALICIOUS

PDF

75.1 KB Created: 2021-01-19 20:17:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 88c06f88a119ef8457853d332d8ec7f6 SHA-1: b35d9d281107332fe51c9b35709197c24aa5cc3b SHA-256: 6e95dca203d634284cd2c1ebdb450ccf11987a3a7d556877cd1364943003daee
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, suggesting a phishing or SEO manipulation attempt. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to redirect users to potentially harmful content.

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://traffnew.ru/wb?keyword=ideal%20ice%20cream%20scoop%20size PDF link annotation
    • https://wogalipa.weebly.com/uploads/1/3/4/3/134316604/tijuwize.pdfIn PDF document text
    • https://bososafevibusup.weebly.com/uploads/1/3/4/0/134041518/a4be328a7.pdfIn PDF document text
    • https://wojedebaroz.weebly.com/uploads/1/3/1/6/131637691/gomigitixatew.pdfIn PDF document text
    • https://fepaxumezo.weebly.com/uploads/1/3/4/3/134320712/48dabaa.pdfIn PDF document text
    • https://site-1167933.mozfiles.com/files/1167933/zugubudujixevudeji.pdfIn PDF document text
    • https://suwudaxodorepe.weebly.com/uploads/1/3/4/8/134885248/5204580.pdfIn PDF document text
    • https://bekaxerovesujes.weebly.com/uploads/1/3/4/8/134856890/wuxevalev_rupibagazuweweg_lowado_weforela.pdfIn PDF document text
    • https://site-1200530.mozfiles.com/files/1200530/epic_boss_fighter_1_hacked.pdfIn PDF document text
    • https://vulalubog.weebly.com/uploads/1/3/4/8/134862436/popiropi_tabulajilitoga.pdfIn PDF document text
    • https://site-1175916.mozfiles.com/files/1175916/71481766078.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490757/normal_5fdc25a92084f.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/gavexilatuvitaz/besame_mucho_partitura_piano_y_voz.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/wowefexe.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/garode.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/40394562629.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/modern_automotive_technology_workbook.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_off0000dd86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD86 4808 bytes
SHA-256: 4f820d88c964bff3f91ccb3b456a79643d80ab17d555895def09329d742426fb
font_01_sfnt_off0000edcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCC 10316 bytes
SHA-256: bd4559a4584d838b358b34046e65cf322c3337d133e142016a4c946fd67f222e
font_02_sfnt_off000110ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110EA 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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