Malicious PDF — malware analysis report

Static analysis result for SHA-256 3943cfe73fae89ea…

MALICIOUS

PDF

79.2 KB Created: 2021-03-01 19:41:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: d4d6caee4fd80e2f0dbdb543c8932f1a SHA-1: f3ac6ace0eae82b78aab24fabc6515ac4cbb8619 SHA-256: 3943cfe73fae89eab66d37b38e56afc4af57fb713d7bf20d5d8c16f0538a5544
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains embedded URLs, one of which, https://golowaki.ru/aws?utm_term=effective+leadership+and+management+in+nursing+sullivan+8th+edition, is directly referenced in the heuristics. The document body, though heavily obfuscated, suggests a lure related to academic material, likely intended to trick users into clicking the malicious link. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly indicate a phishing or malware distribution 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://golowaki.ru/aws?utm_term=effective+leadership+and+management+in+nursing+sullivan+8th+edition PDF link annotation
    • http://gejokakop.mygamesonline.org/58688908435.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/latobawavixosivenifon.pdfIn PDF document text
    • http://remontnatali.ru/trade_license_form_chittagong_city_corporationtae6k.pdfIn PDF document text
    • http://rubewox.sportsontheweb.net/65338352623.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/can_you_cook_gammon_on_a_george_foreman_grill.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/46980516965.pdfIn PDF document text
    • http://didazema.mypressonline.com/export_keynote_to_imovie_on_ipad.pdfIn PDF document text
    • http://zaxegod.getenjoyment.net/suxamokometelesuku.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/lekijajobufanegu.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
    • https://s3.amazonaws.com/faluzotixupi/bad_boy_tungevaag_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/hummingbird_spirit_guide_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/93623028426.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/77193065132.pdfIn PDF document text
    • http://lelisavebak.rf.gd/57047102419.pdfIn PDF document text
    • http://posufimiru.rf.gd/zonogakibirusikakati.pdfIn PDF document text
    • http://kagufunoziwezu.epizy.com/14750737245.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE768 5664 bytes
SHA-256: 786e2776b389b7140d14bdedea2f13dde593313a19a158f3811cc15f54279db6
font_01_sfnt_off0000fa7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7C 11312 bytes
SHA-256: 377bcc6f039bb40e1ed485382f1d575f880e8270228433f7cd6888ec4632e9dc
font_02_sfnt_off000120ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120FF 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.