Malicious PDF — malware analysis report

Static analysis result for SHA-256 72c19f1435b10fa1…

MALICIOUS

PDF

86.1 KB Created: 2021-03-11 11:49:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 944597f69e184e593669542d7c9b92ca SHA-1: 65fc228c7227bcbe28a879b80f4d90c9ad04c7b4 SHA-256: 72c19f1435b10fa1af676fa3edb58655686ef4f53a4979749112c63d2f3141d3
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains an embedded URL that likely leads to a malicious site, disguised as a search result for 'air pollution project in odia pdf'. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick the user into downloading further malicious content or visiting a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://midufefew.ru/award?keyword=air+pollution+project+in+odia+pdf PDF link annotation
    • https://cdn.sqhk.co/texekikevow/pggii94/cyanogenmod_rom_installer_app_for_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413465/normal_5ff4a4baeb9d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416512/normal_6043ffebf3c6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413564/normal_604103d60ca13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414339/normal_6039c60c71f9d.pdfIn PDF document text
    • https://cdn.sqhk.co/kupovite/jfjaDSj/duwofiwumuvomebanijegam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484107/normal_603a807eaace0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/liluvad/33948712845.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/iwatsu_phone_speed_dial.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/what_are_the_names_of_the_27_books_of_the_new_testament_in_order.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/top_10_music_sites_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/sheet_music_with_guitar_chords_and_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/xufavebufovomonijape.pdfIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/3665121268.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/creative_names_for_guided_reading_groups.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/42236564739.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/petarewebuviw.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/bose_soundsport_in_ear_headphones_android_review.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/aide_to_dwg_converter_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/futafebularejibedulobinev.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10808 3972 bytes
SHA-256: 51685ded9e450aa096e1df0b50775b4d3b9a16c15251f32c2e29488fa3d020d2
font_01_sfnt_off00011609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11609 5036 bytes
SHA-256: c58feaee3d3599b90eaa815f1c60c3051bd8c0826b71a3ac81cd749463df309c
font_02_sfnt_off00012741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12741 10208 bytes
SHA-256: 7fd8a6496aa20fe913bb65e109e90bf27226655f2613cb072b0471ff22ab51b7

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