Malicious PDF — malware analysis report

Static analysis result for SHA-256 61bbc92da67fb774…

MALICIOUS

PDF

89.5 KB Created: 2021-03-04 22:06:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: f780e04c1f5d5d5de80af21296714459 SHA-1: 4d6ab670ac94efb6338e5640457cf902abbf00cb SHA-256: 61bbc92da67fb7740ea14c513bcbb7ecdb8a6f9dbdbdc242c01279c8000b2c8a
186 Risk Score

Malware Insights

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

This PDF document is classified as malicious by ML models and ClamAV, indicating a high probability of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. The primary external URL points to a page related to 'xfinity x1 voice remote', which is likely a lure to disguise the malicious nature of the document. No scripts were extracted, but the PDF structure and numerous external links strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • 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://pelibifir.ru/award?keyword=how+to+use+xfinity+x1+voice+remote PDF link annotation
    • http://reweder.site/love_animation_video_for_whatsapp_statusskotw.pdfIn PDF document text
    • https://murarukaxew.weebly.com/uploads/1/3/4/6/134666391/b6824b3.pdfIn PDF document text
    • http://italiahot.space/dd_5e_rules_referencefnmgk.pdfIn PDF document text
    • http://yesnutural.space/hamilton_beach_49983_2-way_flexbrew_coffeemaker_manualqynd9.pdfIn PDF document text
    • http://lunagogafoxoj.sportsontheweb.net/bejusoxuvosi.pdfIn PDF document text
    • http://mavigawika.scienceontheweb.net/rinawevelilitivejux.pdfIn PDF document text
    • http://snatural.space/xtreme_soaring_3d_2nixrc.pdfIn PDF document text
    • https://pebabole.weebly.com/uploads/1/3/4/6/134698512/1410036.pdfIn PDF document text
    • http://fiziwafofekaku.mygamesonline.org/what_are_behavioral_interventions.pdfIn PDF document text
    • http://dapajurop.mygamesonline.org/when_do_you_use_a_dehumidifier_in_the_basement.pdfIn PDF document text
    • https://voxepobar.weebly.com/uploads/1/3/4/6/134668427/5977709.pdfIn PDF document text
    • http://cesaregaspari.com/blank_world_map_printable9gb66.pdfIn PDF document text
    • http://leftoutclub.com/madevokejafepepixifinojkd1h1.pdfIn PDF document text
    • http://tehnotop.space/63882278894x5bsv.pdfIn PDF document text
    • https://vafiradas.weebly.com/uploads/1/3/3/9/133988778/tuguvax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4dd4a32c-aced-41d2-87e6-7ff9ca8080d7.filesusr.com/ugd/6d6f33_a411ebf894474d408b1cce81d79b9289.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b59d5cdd-4927-4f96-83fc-3e57f0b675a2/omega_excalibur_remote_start_not_working.pdfIn PDF document text
    • https://33fe1336-4051-433c-b691-b763732126dd.filesusr.com/ugd/6c8f37_bd1f18edba304ea9b3d0a9a67f678965.pdf?index=trueIn PDF document text
    • http://rivenoke.onlinewebshop.net/what_are_the_problems_with_evolution.pdfIn PDF document text
    • https://3465328d-eb21-4af5-a94e-b8fdacefaafa.filesusr.com/ugd/c63bf9_f857f87bf7a6423a80261395e4936d21.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/11e5a62b-29e9-46ac-b6a9-6e12390c162c/happy_birthday_chatal_band_mp3_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e768e6c2-e23d-44cf-aac7-1826eefa63a1/91245444133.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_off00011fb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB6 5120 bytes
SHA-256: 2ce332fe036172f26f789d50dfafb44a439bb7effda7807d774bac1586c81b8d
font_01_sfnt_off00013136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13136 11588 bytes
SHA-256: 0babc08ce634cda776f06fe68d646c3c45c5cd522cbfff0b20fe37b6cdba3d8a