Malicious PDF — malware analysis report

Static analysis result for SHA-256 27861e394d683346…

MALICIOUS

PDF

83.1 KB Created: 2021-03-28 00:14:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: ea28b83b159bfed03e4902afc5333444 SHA-1: 0b031db88d024ef8fd33787b4e5bacdd7a7d0071 SHA-256: 27861e394d6833465c9a32a6e6ea89cb0828e9d30ae7a99cd13c1d54106671cb
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external links, with one pointing to 'http://funonezebiv.rf.gd/sazimilunukovuvap.pdf', suggesting it acts as a link farm or a downloader for further malicious content. The embedded URL 'https://jacksth.ru/award?keyword=the+causes+of+war+blainey+pdf' further supports the attack pattern of luring users to external sites.

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 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.
  • 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://jacksth.ru/award?keyword=the+causes+of+war+blainey+pdf PDF link annotation
    • https://cdn.sqhk.co/vafegijateno/gwifp2s/sims_freeplay_how_to_get_magazines.pdfIn PDF document text
    • https://cdn.sqhk.co/kilatelazobe/hdCjdAK/sadekaxiwakanir.pdfIn PDF document text
    • https://cdn.sqhk.co/bipozipo/gfhigfa/dupuxejubitarijumozepil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://funonezebiv.rf.gd/sazimilunukovuvap.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/premade_dd_campaign_5e_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/sufemenopuxudame.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/rurevulobujapowumunata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf704165-fe5c-4ef1-a67f-7200e7bc77bd/31641249054.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/bobcat_skid_steer_parts_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31bd3783-4b53-417a-bd57-2aa252e23942/99096706353.pdfIn PDF document text
    • https://73c25812-7308-4b32-b985-10e2a25710ca.filesusr.com/ugd/5b604d_89c7b8d673de423c8b4ca2ef89d883c1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcec1868-c9c8-4faa-98d3-d578f8912032/what_if_i_never_get_over_you_lyrics_by_lady_antebellum.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/pufupafoponizinesive.pdfIn PDF document text
    • https://8488b7ac-84bc-45ae-88ed-26841205fc59.filesusr.com/ugd/7cda3c_efba0aaf6e3b46f09eaa51473b8fa9b6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lonozote/duziboturanodidokutixojiw.pdfIn PDF document text
    • http://xekivigevu.rf.gd/27376476620.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_off0000ff39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF39 5528 bytes
SHA-256: f9309d0930fc7e75c6dfbf2de0ac464bc54bd033e69cdef6802d853dfe53705a
font_01_sfnt_off0001120f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1120F 14536 bytes
SHA-256: 2330fa0389e404fe70ef8291192c21377966e2c165eddecc61295e3b5f5f2262

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