Malicious PDF — malware analysis report

Static analysis result for SHA-256 95be45bd7125e45e…

MALICIOUS

PDF

83.3 KB Created: 2021-01-31 12:46:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 56b64af51a175dbabc09bd44e6197054 SHA-1: 1cdaf020c45e93a49fa61efa1de11b2b7c4a4a6a SHA-256: 95be45bd7125e45e037cb174f14e974abe7d90e7fc6f75e12df915e750676a53
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic firings indicate the document is a link farm hosted on disposable infrastructure, designed to lure victims. Although no scripts were extracted, the PDF structure and embedded links strongly suggest a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/wb?keyword=simple%20business%20plan%20example%20word In PDF document text
    • https://cdn.sqhk.co/feguzuvubut/hXjiozo/rapunzel_costumes_for_adults.pdfIn PDF document text
    • https://nizifaweneli.weebly.com/uploads/1/3/4/5/134589853/678860.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370267/normal_5fef67fb44546.pdfIn PDF document text
    • http://fesebenawasoz.iblogger.org/zozixejikajuxafofepuvuzaz.pdfIn PDF document text
    • https://buvonumonub.weebly.com/uploads/1/3/5/3/135304713/2552132.pdfIn PDF document text
    • https://cdn.sqhk.co/sesexibanobu/gtGKggm/15035821109.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475203/normal_6002761139d26.pdfIn PDF document text
    • https://powufekati.weebly.com/uploads/1/3/4/0/134012492/9817568.pdfIn PDF document text
    • https://wumudirega.weebly.com/uploads/1/3/4/5/134515906/4dc323f8ccbc039.pdfIn PDF document text
    • https://kumajevebak.weebly.com/uploads/1/3/1/8/131856027/bezune.pdfIn PDF document text
    • https://nufewaxitobazat.weebly.com/uploads/1/3/4/7/134748461/fenigopujoli-nusewifarawij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485695/normal_600bb89d99e45.pdfIn PDF document text
    • https://xelewutoritawi.weebly.com/uploads/1/3/1/0/131070131/golamasovudisoweleji.pdfIn PDF document text
    • https://cdn.sqhk.co/ludibipimilu/ieAhb0U/kiki_s_delivery_service_costume_diy.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/farezelof/journal_voucher_format.pdfIn PDF document text
    • http://nekaxikafixof.epizy.com/exterior_door_design_catalogue.pdfIn PDF document text
    • http://keguwaburafokul.epizy.com/dewudutumorosozemekuludip.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/66165864840.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/kejitasivaguvokad.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/22935439358.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/wodadefukaxegerime.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_off0000fae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE8 5312 bytes
SHA-256: 31b44e664bacb29cf341e7d4180de1466146e71ab74a188aaf7c8d07215c6214
font_01_sfnt_off00010cd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CD1 10652 bytes
SHA-256: d57bf4543c76ed8635e6e143282e455911507a16ca7024a4ce4d3af7dbf14c7e
font_02_sfnt_off0001313e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1313E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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