Malicious PDF — malware analysis report

Static analysis result for SHA-256 85a6c9a2a0efb6f4…

MALICIOUS

PDF

132.7 KB Created: 2021-03-21 21:09:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bd8aea30d56137dbfaa2bb40f36c1bb SHA-1: 255978db1ee7dd84dd34d08fa6bd8cac4b8899d5 SHA-256: 85a6c9a2a0efb6f459bfa19855993564de1e4cbb2dd43ff707300ced8c9e0322
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL disguised as a document title. The ML classifier and ClamAV detection strongly indicate maliciousness. The primary URL, https://mezovuduw.ru/award?keyword=public+finance+and+public+policy+5th+edition+solutions+pdf, is likely intended to lead the user to a phishing or malware download page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://mezovuduw.ru/award?keyword=public+finance+and+public+policy+5th+edition+solutions+pdf
    • http://babixuxuw.22web.org/mcdonalds_allergen_information_usa.pdf
    • https://pojekemo.weebly.com/uploads/1/3/4/4/134469054/6485023.pdf
    • http://deduvatogujax.iblogger.org/osrs_1-_99_crafting_guide_profit.pdf
    • http://bumumapa.mypressonline.com/17021642686.pdf
    • http://jugejemum.iblogger.org/sat_math_practice_with_answers.pdf
    • http://studyweb.site/7412159984097473.pdf
    • http://kujazutowisut.22web.org/garisadabekijamulapim.pdf
    • http://mexicotop.xyz/electribe_2_sampler3tx5o.pdf
    • http://osthondroz.com/bufawawetoludipubak6kvze.pdf
    • http://umkatrade.ru/fexejas3swsm.pdf
    • https://dazuzezabemor.weebly.com/uploads/1/3/1/3/131380892/a51f9be03.pdf
    • https://vuvonuzomuvi.weebly.com/uploads/1/3/4/5/134508102/c7f7f60.pdf
    • https://welaxulisura.weebly.com/uploads/1/3/4/0/134042468/5c17254a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://riremeg.rf.gd/506257734.pdf
    • http://sotexazonilot.rf.gd/adobe_premiere_free_presets.pdf
    • http://badamowafe.onlinewebshop.net/sovadanebinuliva.pdf
    • http://wulukexererumus.epizy.com/29094149357.pdf
    • http://pugunexipidil.rf.gd/what_is_the_current_nec_code.pdf
    • http://nokolul.epizy.com/poboxi.pdf
    • http://vewevilamavem.rf.gd/micro_turtle_beach_420x_reset.pdf
    • http://bumejefivoxigo.myartsonline.com/81258615721.pdf
    • http://temolujipu.myartsonline.com/the_importance_of_being_earnest_bangla.pdf
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b9a1.bin
42ed2114a48d277de5efe74e641a897753e530d02d7eb96a3e0028d5e4f6ab57
pdf-font-stream PDF embedded font (sfnt) at offset 0x1B9A1 5396 bytes
font_01_sfnt_off0001cbf6.bin
3fd54e4e9ed8d7f90c517c5e523b56b24f54b436fff2ca2e9d0df8f1dbe1a0e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x1CBF6 12544 bytes
font_02_sfnt_off0001f672.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x1F672 4324 bytes