Malicious PDF — malware analysis report

Static analysis result for SHA-256 2613ef2ba396211e…

MALICIOUS

PDF

73.1 KB Created: 2021-04-01 23:45:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: b9cd46bc4343b63fea6db962c965254d SHA-1: 6e852d8730fcf6c72ab2e8c49e4d578eb454e9e8 SHA-256: 2613ef2ba396211e2636a6d53d6d67e8eac9aa071b62d483c9ba43c09b555394
126 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous embedded URLs, with several pointing to suspicious domains like 'soxebez.ru' and 'rosipale.scienceontheweb.net', suggesting a phishing or malware distribution attempt. The PDF structure and embedded content indicate it's designed to trick users into visiting these external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/award?keyword=game+business+plan+pdf PDF link annotation
    • http://rosipale.scienceontheweb.net/annemarie_schwarzenbach.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/19387023167.pdfIn PDF document text
    • http://jugonosimov.22web.org/17999262294.pdfIn PDF document text
    • http://digosige.mywebcommunity.org/how_do_i_fix_the_sound_on_my_panasonic_tv.pdfIn PDF document text
    • http://muvepifare.mygamesonline.org/zomivumubapisenomikunefo.pdfIn PDF document text
    • http://vasamekekegu.iblogger.org/36669087571.pdfIn PDF document text
    • http://nijepatexosanus.medianewsonline.com/academy_stars_2.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/suxuzubojut/android_studio_set_java_home_linux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de54eb14-69b6-417a-8698-b12081484040/80758209085.pdfIn PDF document text
    • http://zimufoduso.rf.gd/58090690821.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/93459822696.pdfIn PDF document text
    • http://lafafodewasu.rf.gd/bvg_s_bahn_plan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4638f7be-c117-4b96-8e66-c11b84de0a71/13586272448.pdfIn PDF document text
    • http://gumomexad.onlinewebshop.net/what_age_to_read_the_yearling.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/amediateka_apk_4pda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d22af06-30fb-4e9b-8a3b-22dad91fd5ed/what_to_do_if_your_moped_wont_start.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/shazam_music_er_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93bd0e79-0449-4398-a622-b18f4fa3e6f7/gurubomabikamow.pdfIn PDF document text
    • http://siwerixu.rf.gd/bendy_and_the_ink_machine_apk_apkpure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47f042ab-4dd2-4aec-946c-6c6beae4a344/89642430712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fb43686-c701-434e-8762-807da4435b71/73841858252.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/25099191095.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4265eb01-ae1b-4d13-ac49-bbf165876624/mozofodipuset.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_off0000ddf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF4 5264 bytes
SHA-256: 94a3268f54dc39ea719e1356ed54c7e97356dc52f49a74a76632514d0355bcb6
font_01_sfnt_off0000efc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC9 11744 bytes
SHA-256: 4ac4a1d86d091163ec0b67c57359c258022fe005ac38b15cc6c8b57697cc4104

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