Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed0669458f67987…

MALICIOUS

PDF

106.8 KB Created: 2021-04-04 16:07:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 50a857c76ae7ed6acd031535b307e875 SHA-1: 9a4242da7b7ac69247bb5c2b6157230f5ac46f23 SHA-256: 0ed0669458f67987afda67f83a165d0d6fbaf232b8d979a5e46bb6be775cdabb
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded URLs, one of which is identified as a potential phishing or malicious download link. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of numerous suspicious URLs suggests the document is designed to redirect users to malicious content, likely a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 http://fopekoriw.sportsontheweb.net/abigail_adams_letter_to_john_adams.pdf In PDF document text
    • https://cdn.sqhk.co/lojadisexudo/jpCXmGT/ponusowuses.pdfIn PDF document text
    • https://cdn.sqhk.co/kagixepo/ijcag6X/android_sms_apps_messages.pdfIn PDF document text
    • https://cdn.sqhk.co/fapetemiji/ejfighh/zokenimijajodom.pdfIn PDF document text
    • https://cdn.sqhk.co/senuziker/cheA5jG/82901283412.pdfIn PDF document text
    • https://cdn.sqhk.co/wirujurumugi/giTgeha/nedusoxe.pdfIn PDF document text
    • https://cdn.sqhk.co/dodipenameki/eWcJlMY/22760631099.pdfIn PDF document text
    • https://cdn.sqhk.co/juzurupivepo/ihqjgge/wopolujenuninenelewap.pdfIn PDF document text
    • https://cdn.sqhk.co/fomanazoravu/Y2iheMD/lokicraft_2_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dugixikisim/GjbhiK6/deferulinugisiwegafujudab.pdfIn PDF document text
    • http://sugameloxufe.mywebcommunity.org/49941204923.pdfIn PDF document text
    • https://cdn.sqhk.co/todiwapubu/gdghRBx/lomesifu.pdfIn PDF document text
    • http://kepuxom.mypressonline.com/wudakopijekewinajomuxu.pdfIn PDF document text
    • https://cdn.sqhk.co/xipitufekaru/jh0Wjgc/choppa_fortnite_season_3.pdfIn PDF document text
    • http://jerimujolegem.medianewsonline.com/almirante_richard_byrd.pdfIn PDF document text
    • https://cdn.sqhk.co/pogezasamu/iegdifZ/dead_trigger_offline_zombie_shooter_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/modonasuje/ewifZhe/85934415009.pdfIn PDF document text
    • https://cdn.sqhk.co/gobavata/jigjhje/strawberry_raspberry_jam_recipe_with_pectin.pdfIn PDF document text
    • https://cdn.sqhk.co/govovazeket/vvGjfGk/79758021066.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/B9wesDdUo4k/wb?keyword=funny%20in%20farsi%20chapter%20summaryPDF link annotation
    • https://uploads.strikinglycdn.com/files/85525780-e9e3-4a53-99f3-3d0d82dbadea/nebug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5f26419-62ba-4ff7-8a78-adb6159f8a07/tuxavifevalubi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/478e0f88-960a-4b66-ba46-7596aa67becd/93396472224.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_off0001647f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1647F 5280 bytes
SHA-256: c33719f840f81f88f646196f41134b7ff6bab11785935c97e888a7ff8e4818f4
font_01_sfnt_off00017659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17659 11008 bytes
SHA-256: ea53c3ff692e09b4259a2213bf5c1e1170999872da88da7ac92d30aa0c449f89

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