Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e06023be1228d11…

MALICIOUS

PDF

83.3 KB Created: 2021-03-23 02:50:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 114843ff05a2b35b3c179efda20e00ff SHA-1: 59961c020cb176a320a6612f4bde5c08818bb2ab SHA-256: 0e06023be1228d116bd6440e9c267affbbd7cbcbd122d4b5ddb3b58861beac51
134 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. It uses an urgency-based lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ponafet.ru/strik?utm_term=time+of+contempt+amazon PDF link annotation
    • http://wapadax.scienceontheweb.net/nivotuvitamo.pdfIn PDF document text
    • http://jofipifemu.medianewsonline.com/daxitugulasubavep.pdfIn PDF document text
    • http://kakolamilasaru.medianewsonline.com/quran_word_by_word_bangla_translation.pdfIn PDF document text
    • http://juvizex.sportsontheweb.net/60328803903.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
    • http://jefuxizimume.rf.gd/41711320673.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25db258d-da13-4ce1-be24-5a3e53e32c3f/eleven_rack_drivers_for_catalina.pdfIn PDF document text
    • http://jukasuxoseki.atwebpages.com/mopixowojidilunuzapo.pdfIn PDF document text
    • http://vumoxijesep.epizy.com/34349736775.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/98400121056.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/luzujuwowirozafawo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25f88401-6de5-4113-aece-2352de38b1b2/risibuxebulo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/507a4ddd-b745-41e8-a989-6a627e76b42f/69264296333.pdfIn PDF document text
    • http://buxamojajowolos.rf.gd/listening_skills_colouring_worksheets.pdfIn PDF document text
    • http://winulesodix.rf.gd/96576792685.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da63179d-a954-45c7-9448-c0d5da57f185/craftsman_12_gallon_wet_dry_vac_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9884a8a-e703-4937-9269-9cbcec071459/38569831842.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a25439d-14b3-4a43-accf-19822d4b2fe1/how_to_make_your_own_house_in_adopt_me.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_off0000fb72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB72 4644 bytes
SHA-256: 782b95b98c7309327978af9851f9c7843d0730e7a9f38020dd99096229cc96a5
font_01_sfnt_off00010b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B23 11376 bytes
SHA-256: 4b8fdf796be7e91467fca04b66e7efcfde850ea1a0e2f6aa1b9cb04d8fc7fbad
font_02_sfnt_off00013218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13218 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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