Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7682f3cc072719e…

MALICIOUS

PDF

79.1 KB Created: 2021-04-04 23:29:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c47368e66697baf03bc46b3e74ee8107 SHA-1: 6ed1d5489cc4e1c6d713f4df83dccccd4bd9f86e SHA-256: e7682f3cc072719e4ed852f887d8f59e4c7d310d778c09b97012bc6e5db73ec0
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm, indicating a phishing or redirection attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to lead the user to a compromised site. No scripts were extracted, but the document's structure and URL patterns are consistent with phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/strik?utm_term=how+much+is+a+2012+jeep+liberty+jet+worth PDF link annotation
    • https://xitolomeka.weebly.com/uploads/1/3/4/0/134012462/1535915.pdfIn PDF document text
    • http://natfreshik.fun/how_to_test_kenmore_oven_temperature_sensornjv7m.pdfIn PDF document text
    • http://tk-pobeda.site/1096036572004bek.pdfIn PDF document text
    • https://guvufusefek.weebly.com/uploads/1/3/1/0/131070011/govujaxas.pdfIn PDF document text
    • https://zitewamim.weebly.com/uploads/1/3/1/4/131454986/2840618.pdfIn PDF document text
    • http://wuwisometojone.66ghz.com/old_ethiopian_instrumental_music_free.pdfIn PDF document text
    • https://xibatelilon.weebly.com/uploads/1/3/1/6/131637149/6590b49a702e.pdfIn PDF document text
    • http://new-leggins.site/721590632277t4tm.pdfIn PDF document text
    • http://bosnoslovnoejelaniekupit.xyz/how_to_put_my_wahl_hair_clippers_back_togethersotq2.pdfIn PDF document text
    • http://msertis.xyz/insinkerator_hot_and_cold_water_dispenser_with_filterofluz.pdfIn PDF document text
    • http://pujesuwidiw.22web.org/vumik.pdfIn PDF document text
    • http://save50.pro/xuxalupuluturonadunofwlkft.pdfIn PDF document text
    • http://nonretloli.site/passive_voice_simple_present_and_simple_past_exercises_multiple_choicezhtcw.pdfIn PDF document text
    • http://wonder-ita.space/9698604283369e87.pdfIn PDF document text
    • https://fubomagasikeka.weebly.com/uploads/1/3/4/4/134474343/lepugopa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mufifofoge.epizy.com/adsorption_isotherm_solved_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0820097c-9c22-4248-b06e-6fa24f780099/42764104875.pdfIn PDF document text
    • http://fivamoxopel.epizy.com/87834349653.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8ee2205-7c6c-4b05-a5e1-6015ed04473c/gezur.pdfIn PDF document text
    • http://boparozib.rf.gd/abnormal_psychology_an_integrative_approach_5th_edition_download.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_off0000f34b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34B 5868 bytes
SHA-256: 16882a718896f633239851b7f013cc650407a65146128386a5a487a76b528118
font_01_sfnt_off00010734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10734 11640 bytes
SHA-256: 0949b3f64be646e27550eb04672fb719136a9973d678ecd6a17e0687cf39becc

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