Malicious PDF — malware analysis report

Static analysis result for SHA-256 14e070d1b2d72770…

MALICIOUS

PDF

74.3 KB Created: 2021-03-29 02:27:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1f01f845c82072a894c3634ca2cfe208 SHA-1: 59c695d0f71c1320b9767b20530c9e939137b9c2 SHA-256: 14e070d1b2d72770e5298d25a147304acc705e0062ad27df85811d9102dd75ad
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://fokemale.ru/wix?keyword=paramedic+pharmacology+study+guide+pdf PDF link annotation
    • http://texegevesimiruv.22web.org/stages_of_art_criticism.pdfIn PDF document text
    • https://cdn.sqhk.co/nemalerute/gfjcEha/amaze_white_color.pdfIn PDF document text
    • http://tozofuji.scienceontheweb.net/27761364342.pdfIn PDF document text
    • http://nafepuzemobir.sportsontheweb.net/love_in_the_time_of_cholera_setting_analysis.pdfIn PDF document text
    • https://cdn.sqhk.co/dofofigeniso/icmhhia/pixel_soldiers_the_great_war_apk.pdfIn PDF document text
    • http://janafan.scienceontheweb.net/anatomia_del_cerebro_humano.pdfIn PDF document text
    • https://dudixojazimonam.weebly.com/uploads/1/3/4/6/134638097/gibetenubiju.pdfIn PDF document text
    • https://cdn.sqhk.co/nisikevepoxi/jD9jhk0/slingshock_rail_rush_stadium_new_hasbro_burst_turbo.pdfIn PDF document text
    • https://bebibamo.weebly.com/uploads/1/3/1/4/131438385/9558291.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b32521b7-32ca-447e-9967-d27d0dce683d.filesusr.com/ugd/800b88_93076ae5aa6943b397bc5f171786e898.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/50741212826.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/kanuvi.pdfIn PDF document text
    • https://37791e41-adf9-4b10-971b-12120b55a2dc.filesusr.com/ugd/8c5bc8_7df233ed6822430caed518fa6a75ea36.pdf?index=trueIn PDF document text
    • http://vonizevugopu.rf.gd/how_to_do_the_tapping_solution.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_off0000e68a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE68A 5672 bytes
SHA-256: 28f16863f791fe64f9713821124711b1614cac9112b0dc933fb58250143888b8
font_01_sfnt_off0000f9b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B7 10072 bytes
SHA-256: 02075f2a1a1915c383c9f788149ed4764b5a43a7193e5f183804b57014624311