Malicious PDF — malware analysis report

Static analysis result for SHA-256 47268c6eeb2546b0…

MALICIOUS

PDF

78.4 KB Created: 2021-03-17 10:37:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 768464708b15220de14637b28b4d7f2e SHA-1: d5dc6f18acafc0d7eacff4122870e1e49b909cca SHA-256: 47268c6eeb2546b0555075a1110e8273cf647c8411c84edecab00023a9861b2f
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The document body, though heavily obfuscated, appears to be a lure related to a '30 day squat challenge'. No scripts were extracted, but the presence of numerous external links points to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/award?keyword=30+day+squat+challenge+for+beginners+pdf PDF link annotation
    • https://cdn.sqhk.co/jutusaxibu/f0HMOgg/homemade_face_mask_for_oily_skin_and_pimples.pdfIn PDF document text
    • https://rudiwiguxovo.weebly.com/uploads/1/3/5/3/135317070/bitujavatuj_tenimomazawi_zubilatax.pdfIn PDF document text
    • https://bavoramexur.weebly.com/uploads/1/3/5/3/135326869/kefogir.pdfIn PDF document text
    • https://cdn.sqhk.co/weteroliwo/2hrgf3v/bumijibaxuxedozevajureliz.pdfIn PDF document text
    • http://mijogunabisojil.iblogger.org/best_malayalam_songs_site.pdfIn PDF document text
    • https://jowopuvuramikir.weebly.com/uploads/1/3/5/3/135313070/a92d43aced75ee.pdfIn PDF document text
    • https://dusomekekonipa.weebly.com/uploads/1/3/4/5/134580960/figip.pdfIn PDF document text
    • https://mewasopaligesar.weebly.com/uploads/1/3/1/4/131454012/e8d9caf284.pdfIn PDF document text
    • http://xobokalute.iblogger.org/hp_p2035_manual_service.pdfIn PDF document text
    • https://jemusutagutuf.weebly.com/uploads/1/3/5/3/135390091/nibasigixixel.pdfIn PDF document text
    • https://suzikotelun.weebly.com/uploads/1/3/4/5/134529630/cd71e1.pdfIn PDF document text
    • https://kuvijoxujav.weebly.com/uploads/1/3/4/2/134266993/bba248b0552.pdfIn PDF document text
    • https://borerejo.weebly.com/uploads/1/3/4/0/134040615/6497f09f69270.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nusazonawo.epizy.com/husqvarna_sewing_machine_parts_online.pdfIn PDF document text
    • http://gumimuve.epizy.com/angular_2_template_driven_vs_reactive_forms.pdfIn PDF document text
    • http://mekebinaga.rf.gd/download_sketchup_2014_free_trial.pdfIn PDF document text
    • http://gojejamajutemus.epizy.com/allan_holdsworth_devil_take_the_hindmost_live.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_off0000f213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF213 5996 bytes
SHA-256: 71b11b9e9df8686797e36d24454c31086478ddee63ed32cd56583f2f8d2581c6
font_01_sfnt_off0001066f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1066F 10412 bytes
SHA-256: d260afe99b994a8e594168634f864189e27a891a15e71e437f03dd804d714b4f

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