Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d8176905b6a49a7…

MALICIOUS

PDF

66.8 KB Created: 2021-02-16 01:50:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: d1d7162c26c24f707705f45cb88508a6 SHA-1: 5943cfab68518ffe4f9b6940762d8b7e0ace2cbb SHA-256: 2d8176905b6a49a71e3990aaf7a2f91d6fa0d85c026da1344a7a9c9c36a431a3
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, suggests a lure related to educational worksheets, which is a common tactic for phishing or malware delivery.

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://jottigo.ru/wix?keyword=estimating+square+roots+worksheet+tes PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455659/normal_5ffa0e376a559.pdfIn PDF document text
    • https://jovonawokemurif.weebly.com/uploads/1/3/4/6/134678447/6156ec.pdfIn PDF document text
    • https://jaxenexeleti.weebly.com/uploads/1/3/5/3/135320290/naxux.pdfIn PDF document text
    • https://femodamokej.weebly.com/uploads/1/3/4/5/134529999/ditagoremanugum.pdfIn PDF document text
    • https://vepovipozo.weebly.com/uploads/1/3/4/4/134472033/3103826.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383304/normal_5fc5e6b7b989c.pdfIn PDF document text
    • https://cdn.sqhk.co/wowixepis/WRieiD3/jelly_shift_apk_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzalolotagi/NTWjZig/17245652312.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492574/normal_5ffa44f101ee0.pdfIn PDF document text
    • https://cdn.sqhk.co/fonixoligem/gQhdidg/14588204837.pdfIn PDF document text
    • https://cdn.sqhk.co/gegenosuzun/7E4nHgu/black_art_wallpaper_for_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379618/normal_602a3e4dbbce5.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/nawosineromigi/lonely_planet_greece_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/hopak_orchestra_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/senevefenikobejejet.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/volivadimop.pdfIn PDF document text
    • http://kezasifofajimo.rf.gd/du_battery_saver_app_uptodown.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/85844902966.pdfIn PDF document text
    • https://s3.amazonaws.com/sogovekevi/biometric_residence_permit_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/formal_languages_and_automata_theory_flat_notes.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_off0000c83a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC83A 5304 bytes
SHA-256: efb92a596c00d6574b2c32faa847b45aa0b17c7ae7961fc173db922cbd2cb931
font_01_sfnt_off0000da2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2D 10372 bytes
SHA-256: 1e74ede477515d75f8b93693c96ff9bf401086ecc03a5ccee4c4b879b27b79f9

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