Malicious PDF — malware analysis report

Static analysis result for SHA-256 2813fe23524b274b…

MALICIOUS

PDF

70.2 KB Created: 2021-02-08 14:02:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2a3df4c6441fe8e4111599c2968ddc98 SHA-1: 8ab1250480df191bc6de34b651fb4106306a6bb9 SHA-256: 2813fe23524b274bd6c22022ca43e26fcb22e927187c5598c1144916df1e986c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/aws?utm_term=bamboozable+10+answers PDF link annotation
    • http://all-gopro.com/ponixitoxewosibivvt2oa.pdfIn PDF document text
    • https://dezekebewefe.weebly.com/uploads/1/3/4/7/134731304/jajalakuruwe_vuloji_vexix.pdfIn PDF document text
    • https://davixugamewa.weebly.com/uploads/1/3/5/3/135334906/1444164.pdfIn PDF document text
    • https://disaximineta.weebly.com/uploads/1/3/4/8/134883765/lagikot.pdfIn PDF document text
    • https://wojopegoguw.weebly.com/uploads/1/3/4/6/134690206/6479289.pdfIn PDF document text
    • http://wownatural.fun/drivers_manual_californiahnl53.pdfIn PDF document text
    • https://kibajalixil.weebly.com/uploads/1/3/0/7/130739780/folaxed-gulelisu-luputagipulodor-fuzaxidudav.pdfIn PDF document text
    • https://nasoluludeg.weebly.com/uploads/1/3/4/4/134435301/modiruf.pdfIn PDF document text
    • https://sekazijefof.weebly.com/uploads/1/3/2/3/132303314/kazalit.pdfIn PDF document text
    • http://help-copyrightviolationhelpcenter.com/87622408118frxwa.pdfIn PDF document text
    • https://kofoxutekibefa.weebly.com/uploads/1/3/1/4/131454286/3ee3311.pdfIn PDF document text
    • https://ruxosegid.weebly.com/uploads/1/3/4/2/134265817/xalan_xazez_butopofuv.pdfIn PDF document text
    • https://bezatawe.weebly.com/uploads/1/3/0/9/130968967/vuzozivizu.pdfIn PDF document text
    • https://tujeliwavujojow.weebly.com/uploads/1/3/5/3/135304707/6919884.pdfIn PDF document text
    • http://save50it.pro/metformina_500_mg_para_ovarios_poliquisticoswfp7m.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501509/normal_5fcb383717526.pdfIn PDF document text
    • https://vusuranozaxo.weebly.com/uploads/1/3/4/0/134012668/5330441.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/goneduzum/48106144286.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_off0000d612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD612 5356 bytes
SHA-256: babe4b6b003e51dc2407e32dba0b45d2c8aaffbdccd1f2d6f851e6aaaebe231e
font_01_sfnt_off0000e846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE846 10576 bytes
SHA-256: 190dfa6f085f9e7424a60f20d0fad4fc16ca1bca7cbbb95ff05a17daed03d0d0

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