Malicious PDF — malware analysis report

Static analysis result for SHA-256 d914d3e3bdc05e65…

MALICIOUS

PDF

76.4 KB Created: 2021-04-01 12:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd11d8cb96a315e7a912993f1b948f1b SHA-1: 959171862790af98714e7e3e8e50ac3d86725881 SHA-256: d914d3e3bdc05e655fd48957bf94cfa079795c254d2063204b896f5edac188e5
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that, when visited, likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, contains text related to search queries, suggesting a lure to trick users into clicking the malicious link. ClamAV and ML classifiers also flagged this PDF as malicious.

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://xezojetit.ru/strik?utm_term=how+do+you+set+a+grandmother+clock
    • https://cdn.sqhk.co/buwisotubu/jbGISo2/tavikudivozeputelodi.pdf
    • http://online-sistem.site/eur_1_certificate_templateoovz4.pdf
    • https://cdn.sqhk.co/janurisu/3gh0Lja/mountain_bike_shoes_men_s_flats.pdf
    • https://cdn-cms.f-static.net/uploads/4445331/normal_603cbc89963ec.pdf
    • https://cdn.sqhk.co/puwipaneke/ijnSIhh/72390892449.pdf
    • https://cdn.sqhk.co/tiwopaperuv/IhcIgi7/lokoguzofa.pdf
    • https://cdn.sqhk.co/simikitivo/ibijgeh/griseofulvin_microsize_vs_ultramicrosize.pdf
    • https://static.s123-cdn-static.com/uploads/4427097/normal_5fc6839c6a23b.pdf
    • https://cdn.sqhk.co/viwiratoposu/2Whihgc/manga_maker_comipo_download_crack.pdf
    • http://reggis.info/eicher_pro_2049vy39x.pdf
    • http://899themes-demo.ru/vewaledunuvapugaxagatufhk7b.pdf
    • http://armlur.space/free_printable_math_worksheets_fractions_to_decimalse6t9y.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dazuxujepov/american_boy_little_mix_song.pdf
    • https://s3.amazonaws.com/bizamesuwepe/56075378329.pdf
    • https://s3.amazonaws.com/solonebosop/scott_manual_bird_launcher_uk.pdf
    • https://s3.amazonaws.com/mubefula/logo_design_website_template_free.pdf
    • https://s3.amazonaws.com/ligole/why_is_my_logitech_headset_beeping.pdf
    • https://s3.amazonaws.com/davolazupivowi/widizanipota.pdf
    • https://s3.amazonaws.com/lolijexejomak/how_many_pages_does_the_book_harry_potter_and_the_order_of_the_phoenix_have.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed47.bin
12a01ced7b1b5139488f627ff73c4f38b1568b0c8a132aa3c4096ed11cb19fdc
pdf-font-stream PDF embedded font (sfnt) at offset 0xED47 5572 bytes
font_01_sfnt_off0001002a.bin
8695ca31a329fe0f2f19b8c17f7c4b4db6284c5f9e0f4a7f0a41928fd56e7df9
pdf-font-stream PDF embedded font (sfnt) at offset 0x1002A 10680 bytes