Malicious PDF — malware analysis report

Static analysis result for SHA-256 263035d27054443c…

MALICIOUS

PDF

69.5 KB Created: 2021-03-25 04:00:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 04b06966ad1f4ae2c1cac5a0c6e9c2e9 SHA-1: b4065b8bf0f5cd0674a0ff8d20efe410151ce17a SHA-256: 263035d27054443cb0c59533a24903be1bfdfc60771c706bd6acfeef385d008f
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, including one to 'maypoin.ru/strik', suggesting a potential phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to reference a 'Jonsered chainsaw parts manual', which is likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=jonsered+chainsaw+parts+manual PDF link annotation
    • https://vowipolijej.weebly.com/uploads/1/3/4/7/134713390/bekojirara.pdfIn PDF document text
    • https://maposege.weebly.com/uploads/1/3/1/3/131378999/jovubotif.pdfIn PDF document text
    • https://cdn.sqhk.co/molewekane/vvibijB/titapola.pdfIn PDF document text
    • https://cdn.sqhk.co/zatovafer/DajvjeY/mi_at_t_apk_versiones.pdfIn PDF document text
    • https://sadebisoj.weebly.com/uploads/1/3/2/3/132302749/82e3d8745a5791f.pdfIn PDF document text
    • https://cdn.sqhk.co/xukigipeduve/chbatja/free_sample_checklist_templates.pdfIn PDF document text
    • https://pidofuvu.weebly.com/uploads/1/3/0/7/130739764/dikekikifopi-silixovefetoza-mefuvapitupibe.pdfIn PDF document text
    • https://fezizijopugasu.weebly.com/uploads/1/3/4/8/134850826/5322829.pdfIn PDF document text
    • https://cdn.sqhk.co/fewoxenovof/fWknghX/67950126738.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vukujidor/43901798377.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/6326365311.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/fuwavokokokolazurapunoxu.pdfIn PDF document text
    • https://3b9c8e93-52ab-41e8-96f8-e5fc639bf6fa.filesusr.com/ugd/fe3ccd_7cfe2cbc2e9e4e3f8dfc86b0d1ad6de6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zalomi/irobot_roomba_561_battery_reset.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/journey_to_the_end_of_the_night_book_review.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/kewatediferadavilite.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/85125164473.pdfIn PDF document text
    • https://edb7bb8d-792a-4213-93ec-7f573d37cc74.filesusr.com/ugd/bfd504_e152166fa8334815bc8f5878e16a5e08.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vavabi/evian_bottled_water_quality_report.pdfIn PDF document text
    • https://684917c6-b594-4497-9ea4-141105166a5b.filesusr.com/ugd/0dc9f5_4c2e29fffaf54429bff2c8fa599d19d6.pdf?index=trueIn PDF document text
    • https://769966b8-4adc-437e-bba8-f198cf6e171b.filesusr.com/ugd/41a0b6_d8faad1c6a3b4a88922699b13976d5e7.pdf?index=trueIn PDF document text
    • https://78ee58ad-4251-4cb6-9d9e-6f806931ac90.filesusr.com/ugd/b6b4e8_596c151eb474420c8167e9554851e152.pdf?index=trueIn 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_off0000d362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD362 5396 bytes
SHA-256: 25a567947a26f927d22cabf43ab8a47ef150bbcbdddee3dfc9e39582c7f5a77f
font_01_sfnt_off0000e59d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59D 10108 bytes
SHA-256: c194da726b12bb2120dc4c607b63d32a4b549eff151f3aacd60da22ecf6f19f8

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