Malicious PDF — malware analysis report

Static analysis result for SHA-256 fedfe649f5e82036…

MALICIOUS

PDF

82.5 KB Created: 2021-06-13 06:00:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ff0696145415e40751b4810feaf8ce8f SHA-1: a83a9ed5e1d962ab529eccd635a7ca8604edb800 SHA-256: fedfe649f5e8203651151ae873de9ee3a3c6eca2c5600a663f51d801f09271c6
186 Risk Score

Malware Insights

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

This PDF document is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to obscure the ultimate malicious destination. The document body, though heavily obfuscated, contains text related to downloading content, further supporting a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://catamma.ru/pbw?utm_term=download+scouts+guide+to+the+zombie+apocalypse+full+movie PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369183/normal_600206223bf77.pdfIn PDF document text
    • https://ratigejav.weebly.com/uploads/1/3/4/5/134576845/lipevoxe.pdfIn PDF document text
    • https://jokazetesolibut.weebly.com/uploads/1/3/5/3/135314514/regozamoz_moxakejada.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450259/normal_5ffab2875dbca.pdfIn PDF document text
    • https://rigokapine.weebly.com/uploads/1/3/4/5/134593974/fe30f7f1c8deb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388819/normal_6051f1f3912c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422658/normal_600360f94b4a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414488/normal_60396af8a1be9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408721/normal_600fc2a777fe4.pdfIn PDF document text
    • https://ralikinu.weebly.com/uploads/1/3/4/8/134883141/393394d03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407102/normal_605c5dbf59951.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387033/normal_60bc3cf998f91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465277/normal_6048fa00add20.pdfIn PDF document text
    • https://tubozabuzimez.weebly.com/uploads/1/3/4/8/134878922/4999641.pdfIn PDF document text
    • https://dobumixil.weebly.com/uploads/1/3/0/7/130738680/lipadogixazajifamu.pdfIn PDF document text
    • https://jikunuxot.weebly.com/uploads/1/3/4/3/134315974/3108985.pdfIn PDF document text
    • https://fenorave.weebly.com/uploads/1/3/4/6/134639489/6448775.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/eef37f25-24b3-4c9d-8f7c-9659696a18d7/6150177026.pdfIn PDF document text
    • http://pobonagul.pbworks.com/w/file/fetch/144631614/construction_planning_equipment_and_methods_ninth_edition_9th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdea5327-74b3-4313-929c-c46d742bb2b9/77671615696.pdfIn PDF document text
    • http://sisagexal.pbworks.com/w/file/fetch/144506241/descargar_after_4_google_drive.pdfIn PDF document text
    • http://zolunegoli.pbworks.com/w/file/fetch/144672318/english_words_learning.pdfIn PDF document text
    • http://nitezug.pbworks.com/f/download_amazon_prime_video_premium_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81d198ad-bf7a-4902-9aea-790c72ae30ef/abstract_algebra_herstein_3rd_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94580ad9-4e0b-4b71-a903-1a9915d7f39c/aashto_highway_design_manual.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_off00010215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10215 5916 bytes
SHA-256: 37071b6a6bbc3ea1db21e55bde462fe2d5f3d16fc3eb33f77f645cb42dc537f1
font_01_sfnt_off00011645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11645 10920 bytes
SHA-256: d99a96c2958a85b1dcced5a8e5c6df884e03f046b54bb9d244720903ab188506

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