Malicious PDF — malware analysis report

Static analysis result for SHA-256 7be05905cf14e611…

MALICIOUS

PDF

78.4 KB Created: 2021-04-01 06:44:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59b0cdb746ed30dabf78e1914f6fd541 SHA-1: 98fd196004b02446c1d7a362773472ff61821437 SHA-256: 7be05905cf14e611c155f602a94aa25c9f691283beabf7024a9ea23e11349d1c
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by multiple heuristics and a machine learning classifier. It contains an embedded URI pointing to 'https://lozipotod.ru/wix?keyword=cell+cycle+regulation+worksheet+pogil+answers', suggesting a phishing or malware distribution lure. The document body, though heavily obfuscated, appears to be related to the worksheet topic. The presence of embedded URLs and the overall detection by ClamAV indicate a phishing or trojan delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/wix?keyword=cell+cycle+regulation+worksheet+pogil+answers
    • https://dofedexakupular.weebly.com/uploads/1/3/4/3/134317333/xosifoduzera.pdf
    • https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/de1bda482e68a5a.pdf
    • https://wowemaba.weebly.com/uploads/1/3/1/3/131380083/wowaruru-migeweraxas.pdf
    • http://italywow.info/nordictrack_commercial_12.9_reviewsut4p6.pdf
    • https://movuvoxuwonorad.weebly.com/uploads/1/3/4/6/134667433/kuzopidog_zufujok_govubagon.pdf
    • http://choosenews.space/hope_charter_schoolynvny.pdf
    • https://dumetokewip.weebly.com/uploads/1/3/4/3/134394823/3360716.pdf
    • http://faporivifavavep.22web.org/96165840461.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a96362a4-25d6-4e81-9ec5-ae903ea0afed/memibijilin.pdf
    • http://joxisuzu.rf.gd/67055987291.pdf
    • https://a26b494c-4f54-4b9d-aaa3-e02d462d315a.filesusr.com/ugd/c6268f_42b29f342b9947d9b0caaa932d025bb0.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e78d0e3e-2965-4d50-ba10-883c89df7413/what_are_the_cheapest_wireless_beats.pdf
    • https://uploads.strikinglycdn.com/files/cbc01b04-a294-4a4c-b11d-b9ca426f0b0a/tissot_watches_prices_in_sri_lanka.pdf
    • https://uploads.strikinglycdn.com/files/1cb0d148-b3ef-49fd-8f3e-6a005b4ed370/29600192373.pdf
    • http://tevomare.rf.gd/electric_fan_problems_and_solutions.pdf
    • http://wovogaxix.epizy.com/sea_fishing_gear_uk.pdf
    • http://laxunuwozen.epizy.com/why_is_the_light_yellow_on_my_verizon_router.pdf
    • http://fosixijikalapi.epizy.com/aaon_rn_series_installation_manual.pdf
    • http://lekirajadu.epizy.com/anatomy_of_golf_physiotherapy_book.pdf
    • https://51da6a7d-ee05-4a49-87ee-1b74af3aeb07.filesusr.com/ugd/b80405_d9ba0e1404f747afa24ec808e520f2ce.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f73b.bin
c571834d6834a27300b365274d8cfba7b0e5dfff30dac29c39c3003ce7172d67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF73B 5360 bytes
font_01_sfnt_off0001098c.bin
428a5042febbc841d574673b7815f54762719a8e68a7a525b2fe907723a0cbf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1098C 10216 bytes

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