Malicious PDF — malware analysis report

Static analysis result for SHA-256 23adf11698e7e0d6…

MALICIOUS

PDF

75.6 KB Created: 2021-03-14 03:01:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: cbedd898277dcaf5e21626f836985bb4 SHA-1: a3a4ac9d0b4c34e90522f86d86f3b74ded2d979e SHA-256: 23adf11698e7e0d64903e747c377974a87db3ba395ecca8cab8b189ef2fbeab7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous embedded URLs, with one specifically identified as an external URI pointing to 'https://xezojetit.ru/strik?utm_term=brother+ls-1217+amazon'. The PDF is also characterized as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://xezojetit.ru/strik?utm_term=brother+ls-1217+amazon PDF link annotation
    • https://lirisosu.weebly.com/uploads/1/3/1/3/131384099/1554951.pdfIn PDF document text
    • https://xizexinapak.weebly.com/uploads/1/3/4/3/134359948/xilaxesorigutu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457318/normal_6037349db5f74.pdfIn PDF document text
    • http://ropisunofo.mygamesonline.org/40k_9th_edition_full_rulebook.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404520/normal_5feeb9c0cd657.pdfIn PDF document text
    • https://digafixi.weebly.com/uploads/1/3/0/7/130776371/megufevugo.pdfIn PDF document text
    • http://extraterrestrials.space/bible_for_windows_free_downloadcag60.pdfIn PDF document text
    • http://pirunumilusarib.sportsontheweb.net/72_angels_of_magick.pdfIn PDF document text
    • https://tugesarafexo.weebly.com/uploads/1/3/5/3/135319839/4851767.pdfIn PDF document text
    • http://goodsun.fun/31384208029vjz52.pdfIn PDF document text
    • http://jekeluxuto.mywebcommunity.org/jafozarekunorabuzovabujid.pdfIn PDF document text
    • http://instapresent.site/16505431402uemnt.pdfIn PDF document text
    • https://guxitubekin.weebly.com/uploads/1/3/4/2/134267073/dasoxagowefev_rumunuwefuxamo.pdfIn PDF document text
    • http://trylait.pro/how_to_hook_up_dish_wally_to_tvrz8kc.pdfIn PDF document text
    • http://app-3null.com/sound_blaster_z_installm0n5z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457305/normal_5ff1f724bfb11.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bolirazebaf.myartsonline.com/wanan.pdfIn PDF document text
    • http://pevipitoz.atwebpages.com/how_to_do_bleach_splatter_shirt.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/pafob.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/molefi.pdfIn PDF document text
    • https://s3.amazonaws.com/kafises/bajrang_dal_status_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/how_do_you_reset_hunter_douglas_blinds.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_off0000eae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE5 5320 bytes
SHA-256: 8325a6510b732592bd7137e6c889c654c35dc63e7279a14aa012508f26eedea7
font_01_sfnt_off0000fcdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCDF 10648 bytes
SHA-256: d33aee1030a34f3d2beca56b55d4269e7981f4d7dfe291e5b7ed2ab459d52684

Open this report in the interactive analyzer, or submit your own file for analysis.