Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ab95e839a2a2c57…

MALICIOUS

PDF

77.1 KB Created: 2021-03-24 06:28:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: e7df16ec8feb1c208499a8efc5c99b42 SHA-1: 0e1fae467f0455db2f86a10f9d93e17b082a0497 SHA-256: 2ab95e839a2a2c57add8b62524dbfe5f17f923f33b1d8014cc1cc0cf5c98dad3
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to disposable hosting, indicating a link farm or phishing lure. ClamAV detected this as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The embedded URLs suggest an attempt to direct users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://jumiwimov.ru/award?keyword=catalogo+hinode+em+pdf+2020 PDF link annotation
    • https://kipigifusulip.weebly.com/uploads/1/3/4/4/134437712/sudofezewefa.pdfIn PDF document text
    • https://dokipodaj.weebly.com/uploads/1/3/4/3/134306773/3808699.pdfIn PDF document text
    • https://posolefuriw.weebly.com/uploads/1/3/4/3/134374222/695b5b7dea.pdfIn PDF document text
    • https://webutukokixomuw.weebly.com/uploads/1/3/5/3/135317122/2123285.pdfIn PDF document text
    • https://wudowured.weebly.com/uploads/1/3/0/8/130873715/3db00f3ab0ff.pdfIn PDF document text
    • https://pusudojajepi.weebly.com/uploads/1/3/5/3/135322366/cb834936c5.pdfIn PDF document text
    • https://vobasonuniba.weebly.com/uploads/1/3/4/6/134668907/842473.pdfIn PDF document text
    • https://torewofatovamek.weebly.com/uploads/1/3/4/1/134108613/minubur.pdfIn PDF document text
    • https://koxowugazetumul.weebly.com/uploads/1/3/6/0/136015765/jizuz-noxexoxufaxelak-pawujalijiguzem.pdfIn PDF document text
    • https://zeduxuvanoripi.weebly.com/uploads/1/3/0/7/130775880/kitegipamawij_geredunazagaxe_tesofuwo.pdfIn PDF document text
    • https://manoduxasef.weebly.com/uploads/1/3/4/0/134041035/mojukebak_zadalexad.pdfIn PDF document text
    • http://sojarenenu.iblogger.org/functional_areas_of_cerebral_cortex.pdfIn PDF document text
    • https://piwevowukitibe.weebly.com/uploads/1/3/1/4/131454699/folerinibazesis_mezaxama.pdfIn PDF document text
    • https://lomofoxagut.weebly.com/uploads/1/3/4/5/134524577/b06ea12b94179a9.pdfIn PDF document text
    • https://jepifobowokeba.weebly.com/uploads/1/3/0/7/130776363/75b0ca.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://diwifesatikebak.epizy.com/california_achievement_test_practice_free.pdfIn PDF document text
    • https://7b0be8f9-9705-4ebf-ac8f-a3feda4d386f.filesusr.com/ugd/bcd086_2b91a6ff1adf4ec7bec60e210167db7e.pdf?index=trueIn PDF document text
    • http://pegalisijeg.epizy.com/how_to_write_captions_on_photos_in_facebook.pdfIn PDF document text
    • https://e966359d-176b-477a-9ad9-c314bea94227.filesusr.com/ugd/fa6f14_cb9ef5cc6f2a4828962140198eaab619.pdf?index=trueIn PDF document text
    • http://poresiz.epizy.com/zuparidinaxixej.pdfIn PDF document text
    • http://susarapobat.rf.gd/diamond_infinite_edge_pro_sb1.pdfIn PDF document text
    • http://tomosuromiv.epizy.com/39713633341.pdfIn PDF document text
    • https://c538924d-9290-4e35-808b-5013ecaac822.filesusr.com/ugd/047ea9_1d45385be1394d62a875bbfb8e602a44.pdf?index=trueIn PDF document text
    • http://turakolop.rf.gd/gold_rush_season_9_episode_guide.pdfIn PDF document text
    • http://fijopad.rf.gd/xasejiluriviboguxaxep.pdfIn PDF document text
    • https://e691ad07-92dc-45fa-af10-8929b4045ede.filesusr.com/ugd/87b9a8_1309125447d34bb79681297f221bac3e.pdf?index=trueIn PDF document text
    • http://bukavomagotixe.rf.gd/46074475691.pdfIn PDF document text
    • https://229c3593-bb94-4e5d-9b9f-ca3747df48ef.filesusr.com/ugd/145364_e7f9b77686f94d288e78e64c10f0d12f.pdf?index=trueIn 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_off0000ebef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBEF 5360 bytes
SHA-256: 41e4893457cfc46b1bad0ec1f7650c163ea3cba0e60a9c176366c50025d3c9ad
font_01_sfnt_off0000fe08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE08 12840 bytes
SHA-256: 474b82d1031f63dcc034e841ec8fc4a631931d74359a512606404a087c9e70cf

Open this report in the interactive analyzer, or submit your own file for analysis.