Malicious PDF — malware analysis report

Static analysis result for SHA-256 d34715aab3edda77…

MALICIOUS

PDF

70.2 KB Created: 2021-03-22 11:50:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dbdc196c4022367536f6388e9d9b8b6c SHA-1: d91ea32f34d4f1609814db0478a8d7bd91c5a710 SHA-256: d34715aab3edda77bf194a8a47677ace69b66cfb1ee4d88188d01bdbf32569a1
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a significant number pointing to potentially malicious or SEO-farmed content, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. The embedded URLs and the PDF structure suggest an attempt to redirect users to external sites, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://botokaw.ru/award?keyword=biblia+de+referencia+thompson+pdf
    • https://cdn.sqhk.co/pulizojiwim/QZ29jaR/pufitozobejetunusazapel.pdf
    • https://liwobolavus.weebly.com/uploads/1/3/4/1/134131542/mifef.pdf
    • http://espaceabonne.com/patrick_throwing_snowball_memej1l98.pdf
    • https://cdn.sqhk.co/jusulikipe/gdugfjf/mezeze.pdf
    • https://fawitazekivaji.weebly.com/uploads/1/3/1/4/131454143/dasanu.pdf
    • https://cdn.sqhk.co/lituxopevuk/iboRjj1/mx_music_player_free_online.pdf
    • https://vexigijetizi.weebly.com/uploads/1/3/4/7/134771524/a7d2d.pdf
    • https://cdn.sqhk.co/leperanurosi/iggfCTi/98249288283.pdf
    • http://c-advance.space/46464294037nohyk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/luworizesupox/bgt_buzzer_sound.pdf
    • https://s3.amazonaws.com/zodererezuzuxi/connection_game_questions_with_answers_in_tamil.pdf
    • http://gafelen.epizy.com/modern_sociology_theory.pdf
    • http://wetedezowob.rf.gd/sutivadowanunujix.pdf
    • https://s3.amazonaws.com/lixisariwulo/buenos_aires_zip_code_format.pdf
    • http://timadulikojig.rf.gd/aeroplane_images_photos.pdf
    • https://s3.amazonaws.com/loxopudizus/backuptrans_android_line_transfer_keygen.pdf
    • https://s3.amazonaws.com/kegovev/62956567799.pdf
    • http://mapesag.epizy.com/chhaila_bihari_ka_gana.pdf
    • https://s3.amazonaws.com/bezegoluzose/lilux.pdf
    • https://s3.amazonaws.com/wewuxuviwar/cv_format_for_teacher_in_bangladesh.pdf
    • https://s3.amazonaws.com/zaxawetawupo/resident_evil_movies_animated.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_off0000d1bc.bin
306100e32a8728e05bd9d2ba6c6dee8a33cbe55be1e68932901048646fd0595d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1BC 5584 bytes
font_01_sfnt_off0000e48a.bin
97e989d3438db565aa3577665ae0a0741d9803ac4def3c2b1768f89ab223c99e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE48A 11300 bytes

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