Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ba39431d54d9b06…

MALICIOUS

PDF

71.2 KB Created: 2021-03-14 19:54:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 7e5318c0f1263584ead6ea8dc0ba2281 SHA-1: 9fc28cc96f1de001f20a80da386c46e9badd5a76 SHA-256: 9ba39431d54d9b0601f514b728a77db115239fca0a66e64c6e84c6109d778d8b
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains and identified as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were extracted, the PDF structure and URL patterns are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://midufefew.ru/strik?utm_term=how+to+use+max+buzz+without+a+sponsor PDF link annotation
    • https://cdn.sqhk.co/tedogegez/iiAFifc/70524906053.pdfIn PDF document text
    • https://cdn.sqhk.co/pivogokixej/ihgjoni/pac_man_256_pc_descargar.pdfIn PDF document text
    • http://mixutadumekaje.mypressonline.com/84686133244.pdfIn PDF document text
    • https://cdn.sqhk.co/nezazexador/jiigSgf/22848723442.pdfIn PDF document text
    • http://takipibimaxubov.sportsontheweb.net/begufarukunomawo.pdfIn PDF document text
    • http://sajiwurejedetu.sportsontheweb.net/cowon_plenue_d2_price.pdfIn PDF document text
    • http://ritixabig.iblogger.org/fikarexomabulinijozibi.pdfIn PDF document text
    • https://rajexomogalifi.weebly.com/uploads/1/3/4/8/134891851/6710502.pdfIn PDF document text
    • http://mokaxizekebade.scienceontheweb.net/el_nombre_del_viento_mp3_gratis.pdfIn PDF document text
    • https://tasoxagizuj.weebly.com/uploads/1/3/4/7/134734804/meximipuvofokisajako.pdfIn PDF document text
    • http://lukiduxipapep.mywebcommunity.org/god_and_the_state_bakunin.pdfIn PDF document text
    • https://susevire.weebly.com/uploads/1/3/4/8/134885610/3d1121c9ce3dc2.pdfIn PDF document text
    • http://rosativiwam.mypressonline.com/97627189289.pdfIn PDF document text
    • https://cdn.sqhk.co/xurilopotun/Qijjb3F/imagine_john_lennon_piano_sheet_music_easy.pdfIn PDF document text
    • http://wivadenidiset.iblogger.org/vetagudikeloronigo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/perurulexi/67621269675.pdfIn PDF document text
    • http://duxepivol.myartsonline.com/movie_maker_app_free_android.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/zavemasat.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/wojamumabumilulokuledano.pdfIn PDF document text
    • http://xovefepotulat.epizy.com/lorelufag.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC827 5340 bytes
SHA-256: e19d6a303d986e0035a819be09d10f1ed6779a55d50a21e5ef118665667c3384
font_01_sfnt_off0000da2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2C 6068 bytes
SHA-256: d8e4b7f44dfb66ea49c7f1cefd345a391fade3fb548cc17de4cdbf151663dabd
font_02_sfnt_off0000e9dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DD 10388 bytes
SHA-256: e7f996ed687cea0c3bac8233dc1f645a4cf9bfbbe7a80a0b75cb1ce384ba8ed5

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