Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a63a4a9cce8ebe1…

MALICIOUS

PDF

72.2 KB Created: 2021-02-20 17:24:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 09dccd6d7d6e323cf216ed960a9cc551 SHA-1: e2c33331352b4144d0f3e4b731c0a825bcd867eb SHA-256: 1a63a4a9cce8ebe1bfc34799e79203daa9d76ba78d73836810dfba07f0f1c238
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://druttle.ru/wb?keyword=active%20listening%20meaning%20and%20example PDF link annotation
    • https://nefadojajekewa.weebly.com/uploads/1/3/0/8/130874163/ribil.pdfIn PDF document text
    • https://bavipakodotem.weebly.com/uploads/1/3/5/9/135958795/nejutakedokiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380525/normal_5fd84ffa4c6b1.pdfIn PDF document text
    • https://jewadasin.weebly.com/uploads/1/3/4/6/134604584/womevajojafa.pdfIn PDF document text
    • https://romasipunup.weebly.com/uploads/1/3/2/6/132681769/5700244.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460233/normal_5fe41219270dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367300/normal_602186d15e635.pdfIn PDF document text
    • https://goxatuzibifonev.weebly.com/uploads/1/3/0/7/130739188/sugun-kakavofola.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393628/normal_5ff6130af2713.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369501/normal_6012ce7cf2fc6.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/zedilegol/bizavikenavujavazilirim.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/kakupatawosisilo.pdfIn PDF document text
    • http://pufaxutunipoja.epizy.com/mortgage_lenders_tri-_merge_credit_report.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/equations_involving_fractions.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/zusuzikinolibi.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_off0000dec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC5 5416 bytes
SHA-256: 3d695fad63f945acfd1b05145bf8468bcd66ef26a822c1ef21924275a0094226
font_01_sfnt_off0000f12e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12E 10212 bytes
SHA-256: 89bd71f73670f88288fc266a04304009688789bcb057e50755d6baa9df2cb626