Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc94acb4051e375…

MALICIOUS

PDF

85.2 KB Created: 2021-03-01 13:19:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 1462a1ae2bd8af151d1368cb9826d965 SHA-1: 44ffe60174bbd5d2ec28b655cfd8ef2cfd32eac9 SHA-256: 3bc94acb4051e3752ece598f32051f2beeba95d12d348e0a15011e001d66bc8e
186 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing lure, specifically designed to appear as a search result for "Google earth live satellite 2019". It contains a large number of external links, many hosted on disposable domains, indicating a link farm intended to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/123?utm_term=google+earth+live+satellite+2019 PDF link annotation
    • https://cdn.sqhk.co/pipezifiwip/giQ2shc/ww2_aircraft_for_sale_australia.pdfIn PDF document text
    • https://rokojilezel.weebly.com/uploads/1/3/2/3/132302907/04655b8ab3b9e2.pdfIn PDF document text
    • https://cdn.sqhk.co/kagaxavog/dxpOkhe/9966537458.pdfIn PDF document text
    • https://kifesajisibak.weebly.com/uploads/1/3/4/8/134884742/862b09.pdfIn PDF document text
    • https://wawodupalise.weebly.com/uploads/1/3/4/6/134621762/rumevosarixizar.pdfIn PDF document text
    • https://mikuzowadakan.weebly.com/uploads/1/3/1/3/131383480/zejowebasosu.pdfIn PDF document text
    • https://wefupavoxed.weebly.com/uploads/1/3/2/6/132682659/1dcde.pdfIn PDF document text
    • http://pewadulojuba.mypressonline.com/nextbook_flexx_10_audio_driver.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/31209219238.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/chopin_fantasie_impromptu_easy_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/meriam_and_kraige_engineering_mechanics_statics_7th_edition_solutions.pdfIn PDF document text
    • http://nizowozutagele.atwebpages.com/59430225241.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_off000110cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110CD 5520 bytes
SHA-256: 3ff0de3c6948664bbdcf7ade3892caf2d6412daac1d12695f923312489ce259e
font_01_sfnt_off00012397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12397 10512 bytes
SHA-256: ac8e6f95b0cd154c99fbc903f2cc8fb1674a2df04ae699f22cd760b37de66f56

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