Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c8ee9c47c32192c…

MALICIOUS

PDF

75.2 KB Created: 2021-06-10 15:55:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 9e56edc7985e7212734d1699bd0beba2 SHA-1: 785cf04735cebf054367ce6aaf25b5ba4c15fef0 SHA-256: 2c8ee9c47c32192c37113351c7ac16035df051bc19feb64ea5ede031511fc1b7
146 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The document contains numerous embedded URLs, suggesting a phishing or malware distribution attempt. The presence of a link farm on disposable hosting further supports malicious intent.

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 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://ketchas.ru/pbw?utm_term=how+to+see+wifi+password+saved+on+android PDF link annotation
    • https://static.s123-cdn-static-d.com/uploads/4472764/normal_60b0b7f6e3e5c.pdfIn PDF document text
    • https://jebasunegafepes.weebly.com/uploads/1/3/1/6/131637224/tiwijozibogutakunal.pdfIn PDF document text
    • https://xepebujusu.weebly.com/uploads/1/3/4/3/134319702/936fa907ef3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465559/normal_6045f9e3e7b73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428052/normal_600a9bf37bf55.pdfIn PDF document text
    • https://gunobodupisar.weebly.com/uploads/1/3/4/6/134677737/nagulowipigagoge.pdfIn PDF document text
    • https://xupazipul.weebly.com/uploads/1/3/5/3/135325103/9379849.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451970/normal_60020af5acfdb.pdfIn PDF document text
    • https://tudexabi.weebly.com/uploads/1/3/4/7/134770635/88b233a8b08.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489839/normal_5ff4c8d179d6e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471230/normal_5ffc5e307f4ca.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4379500/normal_60b18f61979c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371272/normal_600a48faeedd2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ea60d77-d5bc-445a-a757-ab3ffb4968a8/17419857020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87149424-ff2e-4ee2-8aff-ae578d403031/eviews_12_free_serial_number.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66b63d75-3351-441e-81ad-4f015d437d5c/analisis_estructural_hibbeler_8_edicion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51100730-4ffb-48fb-92d4-3ddd04a2ed38/3252950347.pdfIn PDF document text
    • http://pefumugat.pbworks.com/w/file/fetch/144595734/xazinasokapap.pdfIn PDF document text
    • http://dujimowiwup.pbworks.com/f/94779059824.pdfIn PDF document text
    • http://tebejeloxid.pbworks.com/w/file/fetch/144424191/how_to_emcee_a_7th_birthday_party.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5c68416-6e2a-4b9a-9834-53a0646a57de/how_to_start_lexus_hybrid_with_key_fob_battery_is_dead.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_off0000e80b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE80B 5116 bytes
SHA-256: 9645b8f949c756b38ab55dadc7ff533a2f86f9e429a6a1ca3351296fdf61a2e6
font_01_sfnt_off0000f99b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF99B 11064 bytes
SHA-256: ac33adec8bbb07ad70b17654a881d5211b6222ecc2d4b07a0225c4acf953f8eb