Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2e5a8526f241279…

MALICIOUS

PDF

73.1 KB Created: 2021-03-14 18:42:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 1ee9273321c1424ad3fbd465e4dae85f SHA-1: f5a72f32953acbd3a65b7da5af14a47d52cc0b2f SHA-256: b2e5a8526f24127958338ba6a90ad5e1e54444f69a8b7d3020679744d095bbce
156 Risk Score

Malware Insights

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

This PDF file contains numerous external links, a common tactic for phishing or distributing further malware. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, with one specifically pointing to 'http://afracheat3.xyz/rufefulonya1b.pdf'. The ClamAV detection as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0' further supports its malicious nature. The embedded URL 'https://pelibifir.ru/strik?utm_term=sonicwall+tz400+for+sale' suggests a lure related to product sales.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://pelibifir.ru/strik?utm_term=sonicwall+tz400+for+sale PDF link annotation
    • http://afracheat3.xyz/rufefulonya1b.pdfIn PDF document text
    • http://clubstore.info/82518542176a07cd.pdfIn PDF document text
    • http://putededojijubo.iblogger.org/dopigudulufuwoxo.pdfIn PDF document text
    • http://vbruti.site/77920404334sbl3i.pdfIn PDF document text
    • http://wonnaturila.space/kikelagetoxikekadozohd2pr.pdfIn PDF document text
    • http://pawarelubasiwu.iblogger.org/28362346402.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae09dca4-8d0c-484b-b48e-ebdfc8e99320/44471759670.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91ad11d8-36d0-4341-b400-c7e45cac167b/voruvipowuzafavijuka.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/busuu_apk_indir.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/update_windows_10_manually_1903.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/cartoon_wallpaper_for_pc.pdfIn PDF document text
    • http://gorevifero.epizy.com/mijatamesuni.pdfIn PDF document text
    • https://ee60c613-3dd1-430d-b711-08e3dcbf0273.filesusr.com/ugd/19ce5d_6865ca83a2ff43fd9c314237a66deb7c.pdf?index=trueIn PDF document text
    • https://e905e09d-7ddd-4aab-833c-73500e817873.filesusr.com/ugd/f4c08b_a99efc113faf4c0c865ffcf5cbae0005.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tumasun/gomen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7aec84fc-641b-4520-a484-1c26dc09896a/grohe_sink_faucet_removal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/897ebefc-95de-46f2-9a74-8c71f113ed6a/pokemon_y_route_guide.pdfIn PDF document text
    • http://xutakubu.epizy.com/37608549527.pdfIn PDF document text
    • http://lilufunom.epizy.com/blame_it_on_the_boogie_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/24256065468.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/why_did_america_help_korea.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/xovugi.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/75134594365.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb75f650-a6d0-430d-84c1-9de768213fe3/petusudegimobuxesuni.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/the_river_wild_streaming.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_off0000defc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFC 5352 bytes
SHA-256: 34b60036acfabc9824b67deb10f2e02ee6827cf00e31f4bb23a5835a285c2ff2
font_01_sfnt_off0000f167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF167 10436 bytes
SHA-256: b9e1ac27f50b7eb1baf9ec1761393a93670f83cb698cf770bdb4443c47cdf80c

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