Malicious PDF — malware analysis report

Static analysis result for SHA-256 217c093f1b68abc6…

MALICIOUS

PDF

79.9 KB Created: 2021-03-24 20:10:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 1773e4b16b9b4bf3e36b8d12c0ff1244 SHA-1: 7c2ecbb869f13bb1033b8e635429e1258be8f037 SHA-256: 217c093f1b68abc66211da29f68710028a1b9ed38d630ce8a0e388c36c09f78f
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to 'bologen.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, suggests a lure related to 'Python interview questions for freshers pdf'. No scripts were extracted, but the presence of an external URI in a malicious PDF strongly indicates an attempt to redirect the user to a harmful site.

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://bologen.ru/award?keyword=python+interview+questions+for+freshers+pdf PDF link annotation
    • http://bejavivamiji.22web.org/garmin_gps_12_xl_user_manual.pdfIn PDF document text
    • http://kalukawuwo.mygamesonline.org/29707014048.pdfIn PDF document text
    • http://bovibuvebus.getenjoyment.net/how_does_alcohol_affect_the_liver.pdfIn PDF document text
    • http://wojurimaxab.mywebcommunity.org/poliuria_oliguria_y_anuria.pdfIn PDF document text
    • http://tozemudezajif.mygamesonline.org/mcgraw_hill_my_math_grade_4_volume_1.pdfIn PDF document text
    • http://lomigakorak.getenjoyment.net/96153428719.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/online_adobe_photoshop_free_7._0.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/autodesk_sketchbook_pro_mod_apk_uptodown.pdfIn PDF document text
    • http://kezasifofajimo.rf.gd/embroidery_basics.pdfIn PDF document text
    • http://gokakotafabap.rf.gd/48300011380.pdfIn PDF document text
    • http://vodusafese.rf.gd/lunexe.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/kuxujor.pdfIn PDF document text
    • http://luwegovufa.epizy.com/ielts_writing_task_1_practice_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/ich_guidelines_statistical_analysis_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/cuisinart_k_cup_coffee_maker_descaling.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/open_house_flyer_template_free_publisher.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/vapimedetesimo.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/6089712720.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/how_to_turn_on_big_blue_party_speaker.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1E 5268 bytes
SHA-256: 9d45eb5fef084157e06cdaceb1fffda4a0e666a6a852fe590a6f36efa456b75f
font_01_sfnt_off00010d22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D22 10784 bytes
SHA-256: 92b224dd5b161153274443863ac3cf02db732dec67323997bfc5bdfae65020f9

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