Malicious PDF — malware analysis report

Static analysis result for SHA-256 61e3ded9f7e7999c…

MALICIOUS

PDF

79.3 KB Created: 2021-04-02 23:30:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6c2b7b170d9b1924c510db181cefb78 SHA-1: d84e3b3b808dcffe83b87bc11606958e937d91b8 SHA-256: 61e3ded9f7e7999c80d66c9b8bfb0d4bac538d97cb36cfa08b11cfd65cad5ffe
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a website likely hosting malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though partially obfuscated, suggests a lure related to educational resources, aiming to trick users into visiting the malicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://dafemum.ru/wix?keyword=digital+resources+at+pearsonrealize.com+answers+grade+3
    • http://amsidgi.xyz/745205661614eflc.pdf
    • http://alluniversity.fun/35209946696n80m.pdf
    • http://lakujalinifibo.mypressonline.com/3212611805.pdf
    • http://jonebosu.mywebcommunity.org/function_of_buchholz_relay_in_transformer.pdf
    • http://emirofficialzm.com/fesomfnubq.pdf
    • http://gopusoduj.mygamesonline.org/abdominal_trauma_guidelines.pdf
    • http://intekzafast.online/1981_ford_truck_4_speed_transmission2ouon.pdf
    • http://prizinsta365.website/98869566626oyw0d.pdf
    • http://vertigoa.online/921522598360owp7.pdf
    • http://visionnew.xyz/bawskee_1_zipjxyaw.pdf
    • http://vofigasu.medianewsonline.com/woxovoxuridigaputi.pdf
    • http://wide-take.top/what_is_fsot_testpsd2w.pdf
    • http://instas.site/trane_thermostat_xl824_humidity_controlnp673.pdf
    • http://presentinsta.online/attestation_employeur_pole_emploi_pdj0v1s.pdf
    • http://vashmaster.info/naturazerummrg9.pdf
    • http://mozaduz.mygamesonline.org/lasiku.pdf
    • http://kekijojovif.sportsontheweb.net/32438421502.pdf
    • http://somixewavado.sportsontheweb.net/74615366308.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://fepusum.onlinewebshop.net/bonsai_arboles_en_miniatura.pdf
    • https://s3.amazonaws.com/jipowumat/sex_education_season_3_netflix_uk.pdf
    • http://pojoviraxerojo.myartsonline.com/78559587933.pdf
    • https://s3.amazonaws.com/zalomi/rurepezuxifimigeli.pdf
    • http://zitasixan.atwebpages.com/el_pollo_loco_chicken_avocado_burrito_calories.pdf
    • https://s3.amazonaws.com/mikibetiv/fewunazufonizosofosux.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_off0000e771.bin
776fd3cef136064456df6d88bab58af179f03bba64e5fc7734ced3075f6062b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE771 5612 bytes
font_01_sfnt_off0000fa8d.bin
2821d67ccd1a7d210dfe511e13b15744e6a51eeb24de0c39171512aae8669dcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8D 11168 bytes
font_02_sfnt_off000120be.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120BE 4324 bytes

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