Malicious PDF — malware analysis report

Static analysis result for SHA-256 5522b2fbd62e4510…

MALICIOUS

PDF

76.7 KB Created: 2021-04-07 04:36:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: f854e2d8b5e0d0b6019f06b92610f167 SHA-1: 5161018faf0861dad54a2f71d6a31b94c3f4656a SHA-256: 5522b2fbd62e45108ce02e77fb05ad0d80bcb36ceb5272263af9dd2f28bedd77
186 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to redirect users to various external sites, masquerading as search results for 'Amazon business model 2020 pdf'. Heuristics indicate a high likelihood of malicious intent, with ClamAV detecting it as a phishing trojan. The presence of numerous external links and disposable hosting suggests a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://soxebez.ru/award?keyword=amazon+business+model+2020+pdf PDF link annotation
    • https://sekotujuf.weebly.com/uploads/1/3/5/9/135960234/vorilikegepizaranu.pdfIn PDF document text
    • https://vosovijuz.weebly.com/uploads/1/3/0/8/130813614/rurawewasom.pdfIn PDF document text
    • https://cdn.sqhk.co/laxuweredex/ggIPPla/thyroid_storm_management.pdfIn PDF document text
    • https://fometixivoros.weebly.com/uploads/1/3/1/6/131637143/vofotap.pdfIn PDF document text
    • https://pigamudabuv.weebly.com/uploads/1/3/4/2/134235231/63a6d5c.pdfIn PDF document text
    • https://cdn.sqhk.co/takularozo/Phiwvjh/fofalepofog.pdfIn PDF document text
    • https://lameperitilexi.weebly.com/uploads/1/3/1/1/131164355/470128.pdfIn PDF document text
    • https://lozofuxoxezutuw.weebly.com/uploads/1/3/5/3/135303337/lorevabe.pdfIn PDF document text
    • https://fakivafepupu.weebly.com/uploads/1/3/0/8/130873921/6892518.pdfIn PDF document text
    • https://wixezijuni.weebly.com/uploads/1/3/5/3/135312108/1332981a9.pdfIn PDF document text
    • https://zizojatemizowen.weebly.com/uploads/1/3/4/0/134016780/nezopokira_wanipun_pezirix.pdfIn PDF document text
    • https://cdn.sqhk.co/retesixabe/ibjazie/rusk_deep_shine_shampoo.pdfIn PDF document text
    • https://nidixinaxob.weebly.com/uploads/1/3/0/7/130739699/wezazewonupaj_rogadur_naxamiwiv.pdfIn PDF document text
    • https://budawimimizav.weebly.com/uploads/1/3/0/8/130873912/tofanimoko_kuxakajesajov_julawomibunez.pdfIn PDF document text
    • https://cdn.sqhk.co/xuvisisitinu/96liijc/nepezugexolak.pdfIn PDF document text
    • https://pagazamis.weebly.com/uploads/1/3/5/3/135310118/3686123.pdfIn PDF document text
    • https://gizomedapirev.weebly.com/uploads/1/3/1/4/131454265/8385d9.pdfIn PDF document text
    • https://sinukofulav.weebly.com/uploads/1/3/4/6/134634738/mebedumukimizig.pdfIn PDF document text
    • https://cdn.sqhk.co/kekoseni/hgLwuej/kalogux.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/ef1705ab-bec9-4df5-8f7c-f960d80bf0f6/joburon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9879889a-d1be-4f75-b794-ffe663fda13c/on_the_road_lyrics_canned_heat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6079ab08-e722-4e0e-8c10-a699014f1c97/79604498779.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49bb8139-b5d2-4e60-a85f-b1545eb68eb0/24078126730.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_off0000ed9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9D 5544 bytes
SHA-256: 690752ed6ebd3fa43522e5d6e8e464f617d72ccbd17fc7f05bbde97a62c081d5
font_01_sfnt_off00010064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10064 10380 bytes
SHA-256: d31a92374596c2a895f6dd611495256487852d76e08d0223a676319a4b47996e