Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd2cf412b6b8ad76…

MALICIOUS

PDF

77.5 KB Created: 2021-03-24 00:46:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d9947e0256ea0c78f9f47895dc07108 SHA-1: 889548f182e8d7f0808aab850b3e77c85bce9cca SHA-256: bd2cf412b6b8ad767b5a52b4d29d4c10b459fe696777a50c4f2b84a8d7060d50
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains embedded URLs and a heuristic indicating a visual download button, suggesting a phishing or malware distribution attempt. The presence of external URIs like 'https://xezojetit.ru/123?utm_term=yowhatsapp+apk+free++uptodown' further supports this, likely serving as a lure for users to download malicious content.

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
  • 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://xezojetit.ru/123?utm_term=yowhatsapp+apk+free++uptodown
    • http://cabinetshq.xyz/xoxezatarerw0m71.pdf
    • http://mokemowowove.mygamesonline.org/used_car_inspection_checklist_template.pdf
    • http://vatidenow.medianewsonline.com/58169639563.pdf
    • https://static.s123-cdn-static.com/uploads/4383568/normal_5fffc4c127ce8.pdf
    • http://uspeh.icu/97577703891u86b.pdf
    • http://nozatisesufi.scienceontheweb.net/punulijapititejevovinew.pdf
    • http://bogipeborowe.sportsontheweb.net/68237997207.pdf
    • https://cdn.sqhk.co/vozeseseber/jijfhaQ/thumbelina_1994_song_lyrics.pdf
    • http://1cats.space/pogusubefuvevlkm4s.pdf
    • https://cdn.sqhk.co/daxerarugak/hd0liju/soccer_superstars_2011_mod_apk.pdf
    • http://trendmobile.ru/linksys_wrt160n_v3_manual_espaolhoko4.pdf
    • https://cdn-cms.f-static.net/uploads/4388407/normal_600ece0bc4949.pdf
    • https://cdn.sqhk.co/tipefimex/hjia2jj/medetobofinijunekosexone.pdf
    • https://cdn-cms.f-static.net/uploads/4370053/normal_60312f098eb9e.pdf
    • https://cdn.sqhk.co/xumefotebe/ggdihU6/classic_words_solo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7572da12-d48e-44c9-b5b1-98ef2a090ce4/34176311425.pdf
    • https://uploads.strikinglycdn.com/files/c6e5a14f-6455-41d4-9af0-845ee84e0f01/french_comparatif_et_superlatif_exercices.pdf
    • https://uploads.strikinglycdn.com/files/2d866925-9089-4eca-a1f4-ac3d1ba475a3/similarities_between_the_torah_and_the_bible.pdf
    • https://uploads.strikinglycdn.com/files/be53288a-de70-4699-84f7-71c2705540b6/mossberg_930_spx_collapsible_stock.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3ee.bin
ca1540c9d000d37c3b6ebb14d0467ae90c780f1982a8cd4055ffb44f2a306589		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EE 5212 bytes
font_01_sfnt_off000105bb.bin
4ad29d0c75af42b41e675b36781879d9ec310289e26cac1734546d444d84cc99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105BB 10420 bytes

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