Malicious PDF — malware analysis report

Static analysis result for SHA-256 d54748655f3c3e57…

MALICIOUS

PDF

73.2 KB Created: 2020-12-05 20:05:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 24c94f015e2b4c40e1981f79d9644666 SHA-1: 912850efa913498af4a8f6f2ffd50c08e9b4dbdf SHA-256: d54748655f3c3e57994d35b76712fbf785e4a82c276aa25175792281e64b2761
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including ClamAV and an ML classifier. It contains a large number of external links, many pointing to a link farm hosted on weebly.com, suggesting an attempt to distribute or redirect to malicious content. The embedded URLs and the PDF structure indicate a phishing or content-luring attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffnew.ru/aws?utm_term=kotor+2+character+influence+guide PDF link annotation
    • https://ragikigoludu.weebly.com/uploads/1/3/4/8/134849848/6e4bc97c2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc3814cdf132613bbce2363/t/5fc5442ecb3e0f5771fc36f0/1606763566625/leon_squall_kingdom_hearts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ea02ab7-7f78-4504-a0d9-f841bc57dc9e/segabobaborekeber.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ed3c97c-4092-4ebe-a359-9539c10a441e/lugezog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02e70c82-37ce-4964-adf5-a0cef933ff6d/popular_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab3ac43a-c1be-4aab-b686-5e97e41c336f/synonym_for_moving_slowly.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5ab97405d5340f34a42aa/t/5fc6748fe18c5c478ed96abe/1606841489990/prayer_warrior_prayer_and_study_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc706dc8651a04751958791/t/5fcb3c156e74d26c6ffbeccb/1607154709527/race_for_the_galaxy_pc_review.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13d0827a199023ab79d37/t/5fc3c8ac3f75b1664347c4f4/1606666413136/castle_rock_hike.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c1ca2bbd74065805c248/t/5fc475a318e72e5fdb6775aa/1606710692577/magutejosezovudal.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_off0000d49e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD49E 5088 bytes
SHA-256: bb8e55b04a7e24d9750c7b77c7c52e2ab50f7d15bf272f094b2e0e568d0984ac
font_01_sfnt_off0000e5dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DD 10268 bytes
SHA-256: eb5ffa3f2e07bee741d1f1a5d3631baa65ebd2e551e811428da214b9bfd2c583
font_02_sfnt_off00010872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10872 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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