Malicious PDF — malware analysis report

Static analysis result for SHA-256 48c3060e718e3ac2…

MALICIOUS

PDF

78.0 KB Created: 2021-02-15 09:50:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0cef48cf6fafbcbb38cda4fc6f2563f5 SHA-1: edc2920a439a63014873ccab25e92edbbc328c0c SHA-256: 48c3060e718e3ac20d0198c979a1f173e50db43c60d4796c3d76de04e98167ce
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains suspicious links, with one specifically noted as an 'invisible link to suspicious domain' and another associated with a 'callback phishing phone lure'. The presence of external URIs suggests an attempt to redirect the user to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/strik?utm_term=fourth+grade+learning+games+app PDF link annotation
    • http://ig-supportcenter.xyz/zz_top_ringtones2tjax.pdfIn PDF document text
    • https://cdn.sqhk.co/libarazituw/TkGC3NT/3070055818.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/cjdxmjh/portal_2_mods_steam_workshop.pdfIn PDF document text
    • https://cdn.sqhk.co/zowesifona/f5hf9ib/gilaxibovatazigusos.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzefegevo/ecgjdg4/funoroluliti.pdfIn PDF document text
    • https://cdn.sqhk.co/xanodujijefu/fgf5hhz/infected_movie_2018_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/fjdyRgf/87697256213.pdfIn PDF document text
    • http://copyright-securityx.com/acorde_a9_violoby97f.pdfIn PDF document text
    • http://callipakk2.site/integral_calculus_book_freeom52p.pdfIn PDF document text
    • https://cdn.sqhk.co/nagebagem/uhcjyhb/16529520732.pdfIn PDF document text
    • https://cdn.sqhk.co/zovifesojeme/YdoWrzY/zolewoxu.pdfIn PDF document text
    • https://cdn.sqhk.co/mujejadalale/ijk1Xhj/iphone_alarm_clock_sound_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/dusawugivepo/dBhjgga/learn_how_to_play_piano_online_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://demaketimazo.rf.gd/dysfunctional_family_roles_worksheet.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF216 5328 bytes
SHA-256: be9a8c75f1d5d808e6f9e63162906ba2158138c1df276341f230a229691a5cfa
font_01_sfnt_off00010411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10411 11524 bytes
SHA-256: 1bef400923be4f718df135f84f83efd3148e4950c9855ec6fcacc48967edcaa2

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