Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e59b67c90ffb3bc…

MALICIOUS

PDF

106.8 KB Created: 2021-03-15 15:24:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1debaa89cf1c5efcb6a5e54e9af6939 SHA-1: ec02928064e39cbcd95d1fddc6811d850098cb7b SHA-256: 1e59b67c90ffb3bce7902a938f3f8228ddf47f897f350100f93238a42d1397ec
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is a PDF that contains an embedded URL leading to a download page, disguised as a free book. ClamAV detection and ML classification strongly indicate malicious intent, likely phishing or malware distribution. The presence of multiple unknown URLs further supports this, suggesting a campaign to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/award?keyword=kabbalah+book+pdf+free+download
    • http://banademebilite.sportsontheweb.net/sed_awk_grep_tutorial.pdf
    • https://static.s123-cdn-static.com/uploads/4445115/normal_5ff049c41c358.pdf
    • http://tigadugutuvatix.mygamesonline.org/wujagadademedi.pdf
    • https://wegogutez.weebly.com/uploads/1/3/4/3/134310606/9161441.pdf
    • https://dasukixarukawo.weebly.com/uploads/1/3/2/8/132814138/9536754.pdf
    • https://cdn-cms.f-static.net/uploads/4447912/normal_5fdaebb16aa85.pdf
    • http://rajukilodagoje.mygamesonline.org/60410975288.pdf
    • http://dabukim.mygamesonline.org/diagrama_de_equilibrio_hierro_carbono.pdf
    • https://vivazezege.weebly.com/uploads/1/3/4/0/134041722/9490253.pdf
    • http://nanonewe.scienceontheweb.net/ximatanufe.pdf
    • https://wifaborasumekig.weebly.com/uploads/1/3/2/6/132695644/9917038.pdf
    • http://movawizaxaxato.mywebcommunity.org/ielts_advanced_vocabulary_and_idiom.pdf
    • http://watogoda.mypressonline.com/8574134769.pdf
    • http://dirozigumifew.scienceontheweb.net/mietbrgschaft_eltern_vorlage.pdf
    • http://puduvab.sportsontheweb.net/96145858280.pdf
    • https://cdn-cms.f-static.net/uploads/4478950/normal_5fe916b0924ef.pdf
    • http://nebofimanigi.sportsontheweb.net/rodutubekidirune.pdf
    • http://miribut.mywebcommunity.org/jamefu.pdf
    • http://beririka.scienceontheweb.net/89228645781.pdf
    • http://bumasujofoj.getenjoyment.net/zabidaw.pdf
    • https://cdn-cms.f-static.net/uploads/4462726/normal_603d8e54c1386.pdf
    • https://tovejuzu.weebly.com/uploads/1/3/5/3/135398771/5440964.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zalisujezajaje/xubawewegepep.pdf
    • https://s3.amazonaws.com/dusubonifu/sam_smith_fire_on_fire_sheet_music.pdf
    • http://jumepenitujox.atwebpages.com/devewodekorigimoza.pdf
    • http://rorazizaxaf.atwebpages.com/loveledup.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_off00016498.bin
52ca1b9f61537d256aeb01885f0e19276a71298f6f066ab97b682bd4ba98e657		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16498 5216 bytes
font_01_sfnt_off00017657.bin
e585dc45856aacf85cb6f69beff2aac6e2e69ed0a02b6fdba7e6dd9553d93eaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17657 11156 bytes

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