Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2f1624a6713861a…

MALICIOUS

PDF

71.4 KB Created: 2021-01-08 18:01:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 35aa093789038886464816ad0729c367 SHA-1: 9520d39915180307d5485073998aa504e95a1a7c SHA-256: e2f1624a6713861ae9db7845077c6fceaa1bd7cd7c5d39b60ba8cf4e51ab087a
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?utm_term=gcse+displacement+reaction+worksheet+pdf In PDF document text
    • https://cdn.sqhk.co/kejofuvata/7Oy2Vjc/twinme_private_messenger_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/kitolitik/iBnieje/survival_guide_examples_ks2.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://s3.amazonaws.com/faxaxos/bogue_sound_fishing_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fef8a85-7dcf-4dea-b11e-b3fe3dc45945/14298150856.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/tutorialspoint_data_structures_and_algorithms.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/west_bend_popcorn_popper_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/gofokufa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6255542f-57ab-45c2-b96a-ee5bb5c1b69f/97958277565.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0abc844b-fcf5-488d-85ed-4dc26fcc0b40/gotham_writers_workshop_writing_fiction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d27419f-cfdf-4ba0-86f3-b8d6ac49b16a/lyrics_marshmello_ft._bastille_happier_official_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e73a8d7-4125-4674-b5f3-3a95c807a9ba/argentina_former_soccer_coach.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/2018_calendar_october.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_off0000ca9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA9D 5372 bytes
SHA-256: 39c6df48e9d6014d26517d62b699c0382ca7e8bcd93175574da1c69b62a83817
font_01_sfnt_off0000dcbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBE 10988 bytes
SHA-256: c53cd87eaf0d608c98303facbdb28fb87a92be330583a32df59be23031236414
font_02_sfnt_off00010235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10235 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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