Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b0b7030428cd3a7…

MALICIOUS

PDF

79.8 KB Created: 2021-02-25 08:47:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 986676b8c533c4ee9bbdd6da90be7fbd SHA-1: 4d003ad2cad92d7f4a99e904eb01c061a256bf15 SHA-256: 5b0b7030428cd3a775cd558fe9e54aaf4df936bd8fb2a72ec2b9ac51da6f6f5d
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one heuristic specifically identifying a 'PDF link farm' designed to host malicious content. The embedded URLs and the ClamAV detection strongly indicate a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and link farm heuristic suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://jacksth.ru/strik?utm_term=garmin+etrex+10+marine+maps PDF link annotation
    • https://vumetubav.weebly.com/uploads/1/3/0/7/130776444/tugewotadux_moniganon_tavaxabipire_kafafujaj.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/american_red_cross_cpr_and_first_aid_study_guide.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/cub_scouts_bear_handbook.pdfIn PDF document text
    • http://boxberry-24.cc/world_inventions_and_discoveries_listdfqnz.pdfIn PDF document text
    • https://jowiginuzag.weebly.com/uploads/1/3/1/4/131438641/vojigokaxu-kirezif.pdfIn PDF document text
    • https://susejovidexoxi.weebly.com/uploads/1/3/0/7/130775922/wonide.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/muwemivumazulax/60596469192.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/afk_arena_mod_apk_1._15_08.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/how_to_get_rid_of_bad_feet_smell.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/ardamax_keylogger_4._5._1.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/android_restore_settings_from_google_account.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/darkstalkers_resurrection_ps3_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/29621651494.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_off0000f955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF955 5228 bytes
SHA-256: 0bb0717c1ff61a7636215e1378c0202e0c8ae1d1af4cd251451d3c082281f873
font_01_sfnt_off00010b0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B0D 11500 bytes
SHA-256: a3b02d712e759b83c6641100584b1feb3ea4696c5a847e6b60ef196ccf96706c

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