Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b2a000582ecd30…

MALICIOUS

PDF

79.3 KB Created: 2021-02-12 17:08:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a9f9ffb26cde74fccae689e18214ad3d SHA-1: 794ba1ae0532c272125a7f9853827b405261e7e2 SHA-256: 96b2a000582ecd3025d95c3014634d65d0ef4f0cf14b75271aaddd4eabff78dd
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to PDF files hosted on various platforms, suggesting a link farm or a method to distribute further malicious content. The presence of a specific URL related to 'bruntwood space platform leeds' indicates a potential lure. ClamAV and ML heuristics confirm the malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wb?keyword=bruntwood%20space%20platform%20leeds PDF link annotation
    • https://cdn.sqhk.co/xejudawadoni/haLgfhj/skins_for_crafting_and_building.pdfIn PDF document text
    • https://cdn.sqhk.co/bujavenizake/0gU9jan/uae_to_inr_exchange_rate_history.pdfIn PDF document text
    • https://belinadojo.weebly.com/uploads/1/3/1/6/131607131/1678602.pdfIn PDF document text
    • https://cdn.sqhk.co/gejixoneku/ibBgjjc/89865329740.pdfIn PDF document text
    • https://rulovuwupe.weebly.com/uploads/1/3/5/3/135386045/0fb330111b44.pdfIn PDF document text
    • https://niritopep.weebly.com/uploads/1/3/4/6/134634222/4d4c705f8.pdfIn PDF document text
    • https://zaluvunikuf.weebly.com/uploads/1/3/1/0/131070459/wuxuvelobanosixu.pdfIn PDF document text
    • https://kufidadifijerid.weebly.com/uploads/1/3/1/4/131407945/turiwawimofepavotof.pdfIn PDF document text
    • https://kuxiwidozerapi.weebly.com/uploads/1/3/4/7/134728536/44eeca93.pdfIn PDF document text
    • https://juwujumatel.weebly.com/uploads/1/3/4/0/134042908/50b94.pdfIn PDF document text
    • https://lavolobaned.weebly.com/uploads/1/3/0/7/130740571/xonewegimexake.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://mudotepejix.epizy.com/fish_hatchery_management_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/70038692491.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/skylanders_ring_of_heroes_farming_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/definite_integral_of_trigonometric_functions.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/sustainability_reporting_guidelines_2011.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/38816822355.pdfIn PDF document text
    • http://bejojawap.rf.gd/piwerisidolonisu.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/acc_aha_cholesterol_guidelines_2019.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_off0000ead6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD6 5276 bytes
SHA-256: edf17798eaeab28d0b7f6b774e5d360dce531edf2a8bc41c37f22ad0f18ab1e6
font_01_sfnt_off0000fcc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC4 10792 bytes
SHA-256: 8f5cac6ce7df48b5ffd3740dec04810ed84488cc0eee44930d21307c98ff4c16
font_02_sfnt_off0001219f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1219F 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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