Malicious PDF — malware analysis report

Static analysis result for SHA-256 e46d0b7cd59702f7…

MALICIOUS

PDF

85.1 KB Created: 2021-03-14 17:28:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: c955bdc44b85d1f441deb993141b7bb6 SHA-1: 0332f9aa5675b95e16157c1c893ef214b1f1bef3 SHA-256: e46d0b7cd59702f7f779f966eb5b99cd80929badeb16ec2307ca443f372086b2
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable domains, suggesting a link farm or phishing operation. The primary malicious URL identified is https://lozipotod.ru/123?utm_term=counter+strike+condition+zero+highly+compressed, which is likely used to distribute malware or redirect to a phishing page. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://lozipotod.ru/123?utm_term=counter+strike+condition+zero+highly+compressed PDF link annotation
    • https://tegedibinatamam.weebly.com/uploads/1/3/5/3/135350324/jutozoxukipaf.pdfIn PDF document text
    • https://nalodewemutut.weebly.com/uploads/1/3/1/1/131164475/add176afd9f.pdfIn PDF document text
    • https://rezalebivug.weebly.com/uploads/1/3/0/9/130969918/vewonigovigejemitaj.pdfIn PDF document text
    • https://cdn.sqhk.co/vefuwebilux/ugijjjf/59141692489.pdfIn PDF document text
    • https://dojibabebane.weebly.com/uploads/1/3/2/6/132682208/086933.pdfIn PDF document text
    • https://jabuvevakeg.weebly.com/uploads/1/3/4/6/134685488/4248417.pdfIn PDF document text
    • https://kuwiliwal.weebly.com/uploads/1/3/1/3/131378779/4285414.pdfIn PDF document text
    • https://reponobokuwe.weebly.com/uploads/1/3/5/4/135401207/1344814.pdfIn PDF document text
    • https://bejixetixozivi.weebly.com/uploads/1/3/4/4/134499198/joneraxepodo-zekupisasojol.pdfIn PDF document text
    • https://cdn.sqhk.co/bamazaludez/jfWRhgJ/xarujomitebopekoj.pdfIn PDF document text
    • https://dizorewumuzesab.weebly.com/uploads/1/3/4/0/134012942/wobaxapibatewev_wonerepudewa_gilukekom.pdfIn PDF document text
    • https://cdn.sqhk.co/navififoro/chd5je1/negujugitosoluxoxa.pdfIn PDF document text
    • https://xefapakofaguwa.weebly.com/uploads/1/3/1/1/131164324/lukorezonijifebezaz.pdfIn PDF document text
    • https://sagagokibifaku.weebly.com/uploads/1/3/4/6/134625973/sakilen.pdfIn PDF document text
    • https://cdn.sqhk.co/jutigurotow/7Wiwi3K/21932809559.pdfIn PDF document text
    • https://ralugegab.weebly.com/uploads/1/3/4/8/134888835/wekizat.pdfIn PDF document text
    • https://cdn.sqhk.co/novimabe/ijihtic/83546574747.pdfIn PDF document text
    • https://pasezarovatif.weebly.com/uploads/1/3/4/8/134858127/4629678.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/f9dae503-1786-4aa4-b249-8f68ac355509/why_does_a_moving_charge_generates_a_magnetic_field.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f5a9b64-b60b-4bbd-ab97-d7aceb8e2fe0/overlord_light_novel_art.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2019e69b-4f86-43e9-ace6-6b15f8c5eb26/fifor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a131132-3ad5-45fb-910b-aaeb58c52d06/takiranovo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9156a180-f7ca-47c3-bfda-735349c1816a/portia_the_merchant_of_venice_character_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecffd0f1-2ae0-44e2-9b30-effae1f9cd58/easy_french_books_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b988755b-fda0-4a96-95e5-2e6410e49624/ferurosulurinigo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69cb9694-2c9c-401d-a591-49779ef3af6b/how_to_lie_with_statistics_review.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A0 5396 bytes
SHA-256: af0b880298f890d1e481c9d5e3f91c77182fe59b3be0568e0b196726b9627004
font_01_sfnt_off000108e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E5 10920 bytes
SHA-256: 3b4dc7d52632b33ac74c5b4754b3d171f1e3f52c2d3079276e1f1521052977aa
font_02_sfnt_off00012e4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E4E 16660 bytes
SHA-256: 5c37151e58b57006fec45205b953024960161fc126972448518f450544b1ac12

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