Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c0305b642d175ca…

MALICIOUS

PDF

100.1 KB Created: 2021-04-04 03:26:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 9f6adbca0f15f25d86e0e89f22b83d95 SHA-1: 2835f30130e8e96e859b62e88872a2743ee9b1de SHA-256: 7c0305b642d175caea917879eb0319671289cd656fc7478bbcfd4c2ed7d0b602
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. ClamAV detection and ML classification strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to academic materials, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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
  • 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://resalured.ru/award?keyword=accounting+information+systems+10th+edition+pdf+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4445114/normal_5fef3436cc04c.pdfIn PDF document text
    • http://bexukitekivotap.22web.org/nios_registration_form.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481068/normal_606187fd4c7e5.pdfIn PDF document text
    • https://cdn.sqhk.co/rifarako/rghghhi/milojoludix.pdfIn PDF document text
    • https://cdn.sqhk.co/xawowaguka/1rhfAdq/nupolitoweferubizud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495696/normal_6068dde79ac24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488582/normal_5fd793327b78c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371808/normal_604d88f448627.pdfIn PDF document text
    • http://setovewurepenu.22web.org/74380434610.pdfIn PDF document text
    • https://cdn.sqhk.co/kabawamurelo/0Aijiyv/sonic_the_hedgehog_wallpapers_for_samsung.pdfIn PDF document text
    • https://cdn.sqhk.co/wibononuve/trpjahi/how_to_rosary_prayer_guide_bisaya.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450336/normal_5ffbde8a659e3.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://gogagenuju.rf.gd/std_11_ncert_biology_textbook_gujarati.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/college_football_picks_week_7_bleacher_report.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/angularjs_date_format_pipe.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/kiraxodijuwinipubunugere.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/48197167751.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/the_veil_was_torn_kjv.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/mixexegerizokovaragiloked.pdfIn PDF document text
    • http://tozetusetexu.rf.gd/the_republic_of_doyle_location.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/fusuzixuwaf.pdfIn PDF document text
    • http://gonidiwofove.epizy.com/xetemuzuluwodetiwolupuwek.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000126da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126DA 5828 bytes
SHA-256: 5cbf65bcfcdf85deaf737f1645865d9ecfd801204603701d7de8f79a02e41344
font_01_sfnt_off00013a9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A9B 10604 bytes
SHA-256: 17a4fd41dc442940b750b392141f5797bd88f27e77798b2ef522af1c466e9d1e
font_02_sfnt_off00015eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EEC 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd
font_03_sfnt_off00017419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17419 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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