Malicious PDF — malware analysis report

Static analysis result for SHA-256 07617cec1d2f34e0…

MALICIOUS

PDF

66.7 KB Created: 2021-01-20 08:20:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: b9371300040844fad1cc76bbd9c860bf SHA-1: 0b35834c34b9431f8b34da7df6b468f1a7977336 SHA-256: 07617cec1d2f34e006b62b9fc7a84ab3eaa37643603fc1ddbd9f07c8899aed52
184 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=castle%20crashers%20boomerang%20glitch%20after%20patch In PDF document text
    • https://cdn.sqhk.co/sabimejuka/nShchgt/56317030785.pdfIn PDF document text
    • https://sovevalejuwup.weebly.com/uploads/1/3/1/8/131858043/2484235.pdfIn PDF document text
    • https://site-1218116.mozfiles.com/files/1218116/poster_design_templates.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefimex/UCgighh/6100673381.pdfIn PDF document text
    • https://junobinedutuki.weebly.com/uploads/1/3/2/7/132712306/c3fadf36e.pdfIn PDF document text
    • https://jubiporosevuzu.weebly.com/uploads/1/3/2/6/132695682/zuvepisiwe-redorubofisir.pdfIn PDF document text
    • https://gakutuzopekok.weebly.com/uploads/1/3/4/6/134605442/riwir.pdfIn PDF document text
    • https://kovapuneluwaze.weebly.com/uploads/1/3/2/3/132302913/jipitemuvaven.pdfIn PDF document text
    • https://site-1177706.mozfiles.com/files/1177706/base_plate_design_spreadsheet.pdfIn PDF document text
    • https://site-1258351.mozfiles.com/files/1258351/game_boxing_fighting_clash.pdfIn PDF document text
    • https://belujewirozem.weebly.com/uploads/1/3/2/6/132681559/segenulosogowo-mogem-rixerenogepazog-dowitaletufo.pdfIn PDF document text
    • https://kagujovo.weebly.com/uploads/1/3/5/2/135298661/1be1218812919.pdfIn PDF document text
    • https://toroborelap.weebly.com/uploads/1/3/4/8/134867907/bekikopakafamax.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/werowibovezoje/josepix.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/aparajita_tumi_movie_song.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_off0000c9c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C4 5476 bytes
SHA-256: b9a3a98e38a996461abc4fedb320a6dba724d6543870050d90ee2fd8c066bf19
font_01_sfnt_off0000dc2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2F 9880 bytes
SHA-256: d56408ee5883a176461766f6a335896f73a9d0f5e4d27a4e57e0357d57253563