Malicious PDF — malware analysis report

Static analysis result for SHA-256 014c6c6e7637f20b…

MALICIOUS

PDF

80.2 KB Created: 2021-06-08 02:13:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 252b195d7ce700ced801e41b8a00ce61 SHA-1: 1aa68eeeb5d118640b21ca691f315aa38c9f593d SHA-256: 014c6c6e7637f20b082e6a01d3c5973448f52b19955afb2d0aea9fc3ab0c2118
186 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics as a link farm, containing numerous external links to various websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or SEO manipulation. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 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://philabc.ru/pbw?utm_term=what+is+a+sling+airtv+mini PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383806/normal_600ede720a74e.pdfIn PDF document text
    • https://visuripaxu.weebly.com/uploads/1/3/4/7/134711721/2be7ee68806.pdfIn PDF document text
    • https://rifewageza.weebly.com/uploads/1/3/5/3/135349229/9015037.pdfIn PDF document text
    • https://zabebopid.weebly.com/uploads/1/3/4/5/134585494/22a1b071cff23.pdfIn PDF document text
    • https://susotavawo.weebly.com/uploads/1/3/5/3/135325365/kadedos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471455/normal_5fe74b70ef392.pdfIn PDF document text
    • https://lularufopit.weebly.com/uploads/1/3/5/3/135326527/guxoxaf-zewux-ronemebav.pdfIn PDF document text
    • https://bunogijadijis.weebly.com/uploads/1/3/4/8/134896562/2757433.pdfIn PDF document text
    • https://xonovezalewame.weebly.com/uploads/1/3/4/4/134489084/1e5631354b81d29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453333/normal_60463c894fa74.pdfIn PDF document text
    • https://sowexovaxulaxil.weebly.com/uploads/1/3/4/8/134892082/9452036.pdfIn PDF document text
    • https://xatuguje.weebly.com/uploads/1/3/1/8/131856293/b2db8.pdfIn PDF document text
    • https://lunipudazu.weebly.com/uploads/1/3/4/4/134462877/koxofabokiramas.pdfIn PDF document text
    • https://lotefexikig.weebly.com/uploads/1/3/4/0/134097130/9345058.pdfIn PDF document text
    • https://selikiwomutarew.weebly.com/uploads/1/3/5/3/135329437/vajogewopu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sodopateduke.pbworks.com/f/como_comprar_roblox_card.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b8daf03-7f9e-424b-a7ea-2352206e2aa5/mewafelezubokekumi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0eeb3d7b-0c43-4eda-890c-a3eb1444e15d/78136678819.pdfIn PDF document text
    • http://visetululiv.pbworks.com/f/gor_banjara_lambani_song_please.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88fc3c77-e00c-4d7d-9f4f-dd0cb9d9dae2/febonejorawo.pdfIn PDF document text
    • http://junerew.pbworks.com/f/rusukadodipibagenisizerok.pdfIn PDF document text
    • http://nerobedevu.pbworks.com/f/mereforuxuma.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_off0000fd6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD6E 5172 bytes
SHA-256: ac57726708255cd8e5af6fd23dc0ceecb73c0f1fe1105ab0529c23404ebf82d4
font_01_sfnt_off00010eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EED 10684 bytes
SHA-256: fd2a40179a42756194d6ea6de9df3901fec6c3f62282e7b7847d7bcbf5cb01ff