Malicious PDF — malware analysis report

Static analysis result for SHA-256 55a5ecef19ad9081…

MALICIOUS

PDF

69.9 KB Created: 2020-12-23 00:55:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 65f6b1ebb3333bec2bb7285d3c8a28d5 SHA-1: bbeaaa50ece1b9e724fe97005ee2dac6a762ce59 SHA-256: 55a5ecef19ad9081042874804f5bf5c5cf7c1096033dbd77b88c26c830347a7e
104 Risk Score
Tags
free-cdn-ebook-manual-lure

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, with a specific detection of 'Pdf.Phishing.Trojan'. The presence of an external URI pointing to 'trafficel.ru' suggests a phishing or malicious download attempt. Although no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to exploit user interaction, likely through a link, to achieve its malicious objective.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://trafficel.ru/123?utm_term=canelo+vs+jacobs+date+price PDF link annotation
    • https://tipizilij.weebly.com/uploads/1/3/4/4/134462633/zilidokadasogaja.pdfIn PDF document text
    • https://tatunonomufobuf.weebly.com/uploads/1/3/4/3/134355176/6565824.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc14b3cc89e1c4b8fc11549/t/5fc6a15ce6d49a06bb7cbb9b/1606852957168/skull_wallpaper_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afc681b2-2adf-461c-b955-c5f6d6ac9f26/highly_protein_bound_drugs.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc33d14d49dd12447435ca7/t/5fc4fed1fa04221c71bcbcab/1606745810000/please_notice_lyrics_uke_chords.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc553bcab79f442f246f04a/t/5fd0331328178304111aa6cb/1607480083720/ranked_voting_states.pdfIn PDF document text
    • https://s3.amazonaws.com/pusumowi/rumewenibiwikezafov.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/datotanitutadesirebo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf2343eec7ca5c36537df5/t/5fd1adc99a9e5443ac787f07/1607577039218/funny_gag_gifts_for_girlfriend.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe0062051e6b539731e53fd/t/5fe06956ef8e407a9ec1f5cc/1608542552618/bt_business_hub_6_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/xojevevelokukavobaropeja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe70189f-4ed8-43f7-8a30-d571b9b1275a/me_gusta_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/5814425131.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e852c275-7f93-4764-86c1-6313c407c11d/wulafuloxisikaruf.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_off0000d3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C4 5248 bytes
SHA-256: cb5d3a7caa4c97a10860c882277c77edf6598a449211e19897a7ad5d48e68943
font_01_sfnt_off0000e5ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AC 11212 bytes
SHA-256: 61838d0b4a3baaebfd244af8a6cb19ae6a5dd497b4edd5bec18579ef9d5187f6

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