Malicious PDF — malware analysis report

Static analysis result for SHA-256 78f2fd042e72d0fe…

MALICIOUS

PDF

70.7 KB Created: 2021-02-13 10:55:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e47caa82e3303071ab68b91575013f67 SHA-1: 254768a0a7ee73ca06a138e9a25c47b4cb8f05c9 SHA-256: 78f2fd042e72d0fecb0e840ebb6d276c91f218d994500433f17fc5b39fefc988
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • 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://seumenha.ru/wix?keyword=frp+bypass+2018+apk+by+technocare PDF link annotation
    • https://cdn.sqhk.co/gogerazina/picgibP/jidebinore.pdfIn PDF document text
    • https://ravikuzisuwu.weebly.com/uploads/1/3/4/4/134470025/6773999.pdfIn PDF document text
    • https://luxaxezasu.weebly.com/uploads/1/3/1/3/131398230/37ef19f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452588/normal_5fdbdd2eb6b6c.pdfIn PDF document text
    • http://gafisisaru.22web.org/51709078691.pdfIn PDF document text
    • https://zugowexilib.weebly.com/uploads/1/3/5/3/135349829/c690c016459d1.pdfIn PDF document text
    • http://jejunobu.iblogger.org/44672089100.pdfIn PDF document text
    • https://jodavetofa.weebly.com/uploads/1/3/1/4/131438562/lifomakigolidek.pdfIn PDF document text
    • https://tajixuxax.weebly.com/uploads/1/3/4/7/134751877/15c43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417037/normal_600cfc112ee4c.pdfIn PDF document text
    • https://rowusebejaron.weebly.com/uploads/1/3/1/6/131637242/zaduse.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414342/normal_5fd2723e4d540.pdfIn PDF document text
    • http://xosavetevo.22web.org/46821413657.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dudufimapu.epizy.com/logikujokugimemefe.pdfIn PDF document text
    • http://fewajun.epizy.com/22728966067.pdfIn PDF document text
    • http://xalesikejuxo.epizy.com/fisheye_lens_camera_apk.pdfIn PDF document text
    • http://guzimuj.rf.gd/latest_windows_10_iso.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_off0000d700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD700 5768 bytes
SHA-256: 27bba22ebf19e14521b920a51b06e1afd556d212e4dea3d722569afe5551f788
font_01_sfnt_off0000eaa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA8 10380 bytes
SHA-256: d7fded4b527b6898700778a1bcb864177abc25d6920d6865ab692eee518cac5c