Malicious PDF — malware analysis report

Static analysis result for SHA-256 27912a6e534a42a8…

MALICIOUS

PDF

76.0 KB Created: 2021-02-24 07:11:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 2628d8bf244539ea2f44711c73e7f7f5 SHA-1: 835086795f222441e0245f085a730dfb3f941a78 SHA-256: 27912a6e534a42a819ddc1b50ea171201194fb0d1a8602c1f4640a05558d5c89
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection, indicating malicious intent. It contains numerous embedded URLs pointing to external sites, with several identified as link farms on disposable hosting. The document body, though heavily obfuscated, suggests a lure related to 'beyond the shadows pdf'. The presence of external URIs and the nature of the heuristics strongly suggest this PDF is used as a delivery mechanism for phishing or malware, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wix?keyword=beyond+the+shadows+pdf PDF link annotation
    • http://shoop-fg.ru/73382605795upzyl.pdfIn PDF document text
    • http://fortuneo-enligne.com/xezejenuwanetizevipajoloraqkd.pdfIn PDF document text
    • https://bogagabav.weebly.com/uploads/1/3/5/3/135305267/6ad58bd83bbbb.pdfIn PDF document text
    • http://reweder.site/chrome_extension_videos_onlinetuhpn.pdfIn PDF document text
    • http://povar2020.site/naruto_senki_otaku_anime_apk_freex9azo.pdfIn PDF document text
    • http://kasyanbeauty.com/lamborghini_song_audio_mp4fdbnr.pdfIn PDF document text
    • https://zinorenote.weebly.com/uploads/1/3/5/3/135349773/5792596.pdfIn PDF document text
    • http://copyrighthelpcentral.com/galoluremuv3lzqp.pdfIn PDF document text
    • https://fewurigog.weebly.com/uploads/1/3/0/9/130969621/bipedejeperugoko.pdfIn PDF document text
    • http://big-ita.space/free_spanish_greetings_worksheetgvc59.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gebibem.epizy.com/gasusudefof.pdfIn PDF document text
    • http://xotepugiz.rf.gd/13803191726.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/52799395989.pdfIn PDF document text
    • http://jegozejixal.epizy.com/tiromenumetudox.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/dizodaduzetawenajusuvode.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/xovujid.pdfIn PDF document text
    • http://duxemebuwejaw.rf.gd/rejilebugom.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/36785367212.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/cal_spas_pomona_ca_91766.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_off0000ec64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC64 5244 bytes
SHA-256: d76e9982fb03c60a6bb7b6de1da43e39fe345d721a372d4fcb548309ebbcc30f
font_01_sfnt_off0000fe5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE5E 10796 bytes
SHA-256: 41f798ccca2e396bb0b68abf5ddf0261213ccb302fcbb15588bd930a71ece33f

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