Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8c3846d4e7af834…

MALICIOUS

PDF

78.6 KB Created: 2021-03-03 17:55:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 233119de37763b862e910f0ae4af38a7 SHA-1: 085d5d092390a6fb6bd86befdca86a476846b4a9 SHA-256: a8c3846d4e7af834e02b341b35377450be688d8e7dfdd131719741a8cfec1c8f
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely used to deliver a secondary payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to a story, aligning with common social engineering 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://dugedepap.ru/123?utm_term=the+grinch+who+stole+christmas+story PDF link annotation
    • http://bebetadiruj.mywebcommunity.org/wevogepazuxizudura.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415055/normal_5fd1805ee0d57.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406456/normal_5fcb22d007809.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379035/normal_5ffbb357e788c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373505/normal_5fe86aabd9f58.pdfIn PDF document text
    • http://mevukavotidu.getenjoyment.net/a_short_course_in_photography_film_and_darkroom.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/jobavo/mimuduvakoxowezetinowuxol.pdfIn PDF document text
    • http://jisufuwoj.epizy.com/how_to_report_damaged_baggage_to_delta.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/madivarimiguze.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/juniper_srx650_configuration_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/is_alice_really_dead_the_magicians.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/setup_microsoft_authenticator_android.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/all_silent_letters_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/bebras_2018_intermediate_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/25962358989.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/kaxuxi.pdfIn PDF document text
    • http://gepesosanar.rf.gd/kizejesasewuxuv.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_off0000f7a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A2 5356 bytes
SHA-256: 52f602b6626ea567c1a6f95b9acb1658092d25398f6739a24796fb2b07e05838
font_01_sfnt_off000109c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109C8 10444 bytes
SHA-256: a53732d0a23b8281f2b86cd0ddfa1d19496885e6d8346884cce18576527e2935

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