Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8e656cdd209c521…

MALICIOUS

PDF

75.5 KB Created: 2021-02-03 13:51:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 897ed28ee0f089b5ac24d65e302374ab SHA-1: a0664dd2f3bd238635882a2bcf5cb325ddad46a4 SHA-256: b8e656cdd209c521aae00704acba010ffacd242446182fdd342dbb398dc0c5c5
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://bologen.ru/wb?keyword=banshee%20warframe%20guide PDF link annotation
    • https://sojabejob.weebly.com/uploads/1/3/4/8/134890412/fofaparosi.pdfIn PDF document text
    • https://sanepawoja.weebly.com/uploads/1/3/4/5/134579143/9489702.pdfIn PDF document text
    • https://tamaxanafe.weebly.com/uploads/1/3/1/8/131856242/wujimimije-fowuvojapi-lugaxix.pdfIn PDF document text
    • https://foraketarikovef.weebly.com/uploads/1/3/4/6/134608655/9664537.pdfIn PDF document text
    • http://winsbig.space/gigoniwajeworuvedekofat2363.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386092/normal_5fd722dd9b6e4.pdfIn PDF document text
    • https://tusezewepoxir.weebly.com/uploads/1/3/4/3/134339989/2025964.pdfIn PDF document text
    • https://pejizaki.weebly.com/uploads/1/3/1/4/131437091/woxebakukotitew_fetikamavuxi_suvolij.pdfIn PDF document text
    • https://tusagenitig.weebly.com/uploads/1/3/1/4/131452801/leginixi-demipujarado-jonoxij.pdfIn PDF document text
    • http://lnstgramhelpcopyright.com/clash_of_kings_bot_apk_downloadp1s94.pdfIn PDF document text
    • https://dorenezawux.weebly.com/uploads/1/3/5/3/135383086/8356674.pdfIn PDF document text
    • https://lawukexudemodu.weebly.com/uploads/1/3/4/0/134041757/4827255.pdfIn PDF document text
    • https://widosutolitidaf.weebly.com/uploads/1/3/4/8/134847614/jemoxirimor_xifoworodo_taroxavoregep.pdfIn PDF document text
    • https://nakaleraba.weebly.com/uploads/1/3/4/6/134606700/xadopinaze.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/robumuduluwise/types_of_anorectal_malformation.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_off0000ea82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA82 5428 bytes
SHA-256: 5d9cd97939efd0c7f102bdbe533dae3d38f8f420279a564c873f6c14ee341116
font_01_sfnt_off0000fce1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE1 10800 bytes
SHA-256: 8aea4f1316754b370955c62484876e963852be15e3b005a31f7be37d2e57058d

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