Malicious PDF — malware analysis report

Static analysis result for SHA-256 560813fddba9efc5…

MALICIOUS

PDF

70.4 KB Created: 2021-03-15 16:44:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90cffade5e82df60a48e42c4c1307c05 SHA-1: 1a42e6f14bc4f51863bc634f6125094d7defd688 SHA-256: 560813fddba9efc52c6f929b9ebe55e74022c727072b18e39f0d33f71d6040be
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 hosting and exhibiting link farm characteristics, indicating a likely attempt to distribute malicious content or redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as phishing and trojan activity. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with malware delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://resalured.ru/strik?utm_term=best+horror+short+stories+reddit
    • http://fojozefamofu.22web.org/54635775253.pdf
    • http://kusulapezep.iblogger.org/ssc_marksheet_download.pdf
    • http://rotugozebowovu.iblogger.org/actividades_de_lectoescritura_primer_grado_para_imprimir.pdf
    • http://jafoxidulez.mypressonline.com/homelite_xl_chainsaw_carb_adjustment.pdf
    • http://rogijowop.sportsontheweb.net/49586904930.pdf
    • http://jedonuwijig.iblogger.org/how_does_the_aufbau_principle_apply_to_electron_configuration.pdf
    • http://yourlivehelp.com/un_tubo_de_cobre_tiene_un_volumen_de_0.009_m3_a_10_c_y_se_calienta_a_200_c7v9ns.pdf
    • http://lotibamuzuti.scienceontheweb.net/54028215011.pdf
    • http://bejisosubonito.sportsontheweb.net/norizumuvinit.pdf
    • http://kakafeg.scienceontheweb.net/vubipedovalosisal.pdf
    • http://pocki.top/pipeline_infrastructure_renewal_and_asset_managementkxodv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://jifumoxu.rf.gd/los_7_habitos_de_la_gente_altamente_efectiva_audiolibro_descargar_gratis.pdf
    • http://sefeluxezilire.epizy.com/luxaripekazabatasebur.pdf
    • http://tikomiwewo.atwebpages.com/mullard_tube_circuits_for_audio_amplifiers.pdf
    • http://beposutixavi.epizy.com/what_makes_you_working_class_uk.pdf
    • http://xerevim.epizy.com/60108857320.pdf
    • http://kujodobiwug.rf.gd/wiwok.pdf
    • http://mafojupovovod.rf.gd/how_do_you_draw_a_dog_step_by_step.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc66.bin
0988670ad081c4531d2b8f04b8412046d4e3d40a0597e6cdc2bdd3989370ca35		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC66 4400 bytes
font_01_sfnt_off0000db69.bin
f454313618bc58b902182da780c465bcc775ef33d29beca839a8aa61342cf9bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB69 10284 bytes
font_02_sfnt_off0000fe9f.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9F 4324 bytes

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