Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ed9080fb04b86dc…

MALICIOUS

PDF

79.0 KB Created: 2021-03-06 08:16:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f38ce6ecc992ca419c93250dde027a97 SHA-1: d2ca9ec0e06e7e489e98249fb5dc84e2227ba364 SHA-256: 7ed9080fb04b86dcaeb9ba9bed3341a44394bbb29edd409b91481fca1a863ee5
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. It contains a significant number of external links, with one pointing to 'https://lozipotod.ru/wb?keyword=how%20much%20is%20a%20firehouse%20sub%20platter', suggesting a phishing or SEO spamming attempt. Although no scripts were explicitly extracted, the PDF structure and link farm heuristic indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://lozipotod.ru/wb?keyword=how%20much%20is%20a%20firehouse%20sub%20platter PDF link annotation
    • https://widalafamibag.weebly.com/uploads/1/3/0/8/130814492/b4c3a0c1940.pdfIn PDF document text
    • https://tasusigogifu.weebly.com/uploads/1/3/5/3/135303518/e65dd4ce.pdfIn PDF document text
    • http://zunololanuxigu.sportsontheweb.net/tukage.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/c1338ae7-49ad-4882-8bf5-df5934d82f16/how_to_draw_manga_female_body_anatomy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf5d5645-80ee-4743-b435-7cd806e94bff/gesikowikimonoxati.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/appareillage_et_installation_lectrique_industrielle.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/13403781788.pdfIn PDF document text
    • http://gaxilitexu.onlinewebshop.net/how_to_program_a_ge_universal_remote_to_a_orion_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/6452232763.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/chevrolet_tacuma_2006_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/used_vox_ac30c2_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37c9c949-c4c9-4447-af86-053cfcaa0fab/what_is_the_best_rear_tine_tiller_on_the_market.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/bodovo.pdfIn PDF document text
    • http://pubitawiwinas.rf.gd/walurofavisatur.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/47147763342.pdfIn PDF document text
    • http://gamutazuzores.epizy.com/jukigitolosa.pdfIn PDF document text
    • http://novoniranalisa.epizy.com/powermate_generator_3250.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_off0000f63d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF63D 5448 bytes
SHA-256: 8b63467875f801c00021a4ef7225a0569d67c68e9e8cecedd59e9f157ad3f1d5
font_01_sfnt_off000108ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108AB 11628 bytes
SHA-256: df174940b5ae2d5969bca38dce7678d5ef463b4ea48d81f10ad3a0b234650411

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