Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9851247d6350415…

MALICIOUS

PDF

65.1 KB Created: 2021-03-26 09:00:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 9976a0bae8344f9ff29107c1c2545d7a SHA-1: 5a65dde88a54d96584134cbebaf76de069af3048 SHA-256: d9851247d6350415a52ee4620b15d4a2c276d83d04abbe7940ed92835f93457c
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The ClamAV detection further confirms its malicious nature, flagging it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to an 'intern guide book', aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wix?keyword=onlinemeded+intern+guide+book PDF link annotation
    • http://gutowofobujibos.iblogger.org/ebook_adobe_illustrator_bahasa_indonesia.pdfIn PDF document text
    • http://makelemeg.mygamesonline.org/8031215643.pdfIn PDF document text
    • https://puwikemumej.weebly.com/uploads/1/3/1/4/131454306/riwuza.pdfIn PDF document text
    • http://fakixigulidol.mywebcommunity.org/40860054098.pdfIn PDF document text
    • https://molujeridinu.weebly.com/uploads/1/3/4/4/134400438/xuzawa.pdfIn PDF document text
    • http://ganitigusawev.mygamesonline.org/21620961542.pdfIn PDF document text
    • http://nejamaranidirit.22web.org/network_signal_booster_app_android_free.pdfIn PDF document text
    • https://jorosovepi.weebly.com/uploads/1/3/4/7/134706332/1835907.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pefegazafil.epizy.com/42826760680.pdfIn PDF document text
    • http://ruzojonawa.epizy.com/31301409656.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/lineage_2_revolution_guide_equipment.pdfIn PDF document text
    • http://parimafilifupev.rf.gd/pdf_to_word_editor_sejda.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/rifodivuvinesevi.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/jukofevuvevupev.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/all_information_about_cabin_crew.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/weather_report_doda_jammu_and_kashmir.pdfIn PDF document text
    • http://lunijikujapike.epizy.com/3886139072.pdfIn PDF document text
    • http://ratamam.epizy.com/ap_seminar_iwa_rubric_with_scoring_notes.pdfIn PDF document text
    • http://majerowi.epizy.com/an_introduction_to_computer_system_class_9.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/martyn_lloyd-jones_sermn_del_monte.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_off0000c306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC306 4988 bytes
SHA-256: 1031b58211fc32b0b66e516d02ef2b3ccadb180cd7850ff61b14a3c298e9835d
font_01_sfnt_off0000d3e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E1 10548 bytes
SHA-256: 2e29d09308d1d00f4c867560a1f09a4062915aa0bd9ecf51ed909aae5ee3fcfd

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