Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeac8c996c68214f…

MALICIOUS

PDF

79.3 KB Created: 2021-01-30 08:14:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cbe8c6d959fb115cea8c70b406eec6e4 SHA-1: ce6106f524f1dbb91ca50c686b99fee5f47fa466 SHA-256: aeac8c996c68214f1f1b6f1fcfef997218ae2425400816d4b474948a24adc881
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://maypoin.ru/wb?keyword=hp%20smart%20tank%20printer%20530 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4469634/normal_5ff717b25b520.pdfIn PDF document text
    • http://italywow.pro/wovuxulaparhsjus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405895/normal_600524ec41e9f.pdfIn PDF document text
    • https://vemusosafuz.weebly.com/uploads/1/3/1/3/131398108/wijuwifugat_kefube.pdfIn PDF document text
    • https://mutolumikiwow.weebly.com/uploads/1/3/1/8/131872082/58245.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457311/normal_6006213f2ac48.pdfIn PDF document text
    • https://divisekul.weebly.com/uploads/1/3/5/3/135347680/8632044.pdfIn PDF document text
    • https://cdn.sqhk.co/telazaje/aCdhjSy/39902895633.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/regas-xulemewefe-samikogikidobok.pdfIn PDF document text
    • https://verulezame.weebly.com/uploads/1/3/0/8/130814285/ac29d5058.pdfIn PDF document text
    • http://emmetrix.net/creepy_don_t_touch_my_phone_wallpaperxj27a.pdfIn PDF document text
    • http://datab.vip/cd_de_reggaeton_2019kuzfv.pdfIn PDF document text
    • https://wopadutizibum.weebly.com/uploads/1/3/4/3/134306931/58f008.pdfIn PDF document text
    • http://remont-kholodilnikov.website/70847589535qsou7.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/nawosineromigi/android_nougat_update_for_oppo_f1s.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_off0000fa1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA1C 5388 bytes
SHA-256: 51e0ece7e72eda7ac322ab1546e23115d1c817270db81a0ca3a3e62d288348e6
font_01_sfnt_off00010c57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C57 10672 bytes
SHA-256: 1b59f4bf7e7871d82fcc5ed017161f36ec60b18fa25eae8fff8f6263063fa03e