Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc6fb6f573430e8…

MALICIOUS

PDF

68.2 KB Created: 2020-12-07 11:59:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a5a29edbba75b120a103dcb2d115eff9 SHA-1: baf6492d5eeef0429146c106f18730026b5aed7d SHA-256: 1dc6fb6f573430e87715ee2ebc4af71a7b10ff8bc7383ec2abbb91f2e9e23a96
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafffe.ru/123?utm_term=rosetta+stone+arabic+cost PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415782/normal_5fa8dd016dd5d.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/5fc0c273a13a450babf34cb7/t/5fc275df9b1ed035382bc9d2/1606579682565/murray_lawn_mower_manual_belt_diagram.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc52ec48ef7301f8b2ce720/t/5fc6e134c7c45a5eaf961795/1606869301469/70564135259.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10d7a9955c744b53c6b10/t/5fc521b23f75b16643782200/1606754739300/linerifokakilokomi.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/marketing_plan_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d68d6b10-b334-4aae-862a-e8b995ec160f/74482416480.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2fe30abaecd33182fe85c/t/5fc9b6cb2f5dbb44b779c5d1/1607055053010/litubuxenarirozedikipej.pdfIn PDF document text
    • https://s3.amazonaws.com/wifozuxeku/fudagepetoli.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/77530512797.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d53de6d1-8477-4d14-ab62-9d1a46d8b065/52302731073.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/nice_guideline_intrapartum_fetal_monitoring_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8160288-9e26-4603-b780-c0615c607ead/17343135698.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99facd92-dca4-41e6-8ca3-57e389cebf6f/11895703501.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf54843f75b16643cc03e0/1606374532423/67140608633.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_off0000d008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD008 4908 bytes
SHA-256: 81bbd6a502b0c87273e0585fc2face119ea9b6ebf3fe8b923819b3c298851c9a
font_01_sfnt_off0000e0ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CA 10240 bytes
SHA-256: 8454df1868af2d67ca5556ba8a140a485d47c9bc57b64a74581da5f7ea42360d

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