Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2262cc187229625…

MALICIOUS

PDF

90.9 KB Created: 2021-05-30 03:20:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: c4a975b97f56c7067d68f3f2f7e79194 SHA-1: ca5ad73b5f40a28f240e74b48fca63b9b1eaba76 SHA-256: c2262cc187229625168dc60ecce23ba39ebb5d8625e82e5b5694a4e14db9718f
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a large number of external links, many of which are hosted on disposable domains, indicating a link farm designed to drive traffic to potentially malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external links point towards an attempt to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://jacksth.ru/strik?utm_term=como+cambiar+de+pdf+a+word+sin+programas PDF link annotation
    • https://vimugowome.weebly.com/uploads/1/3/4/3/134323071/6913712.pdfIn PDF document text
    • https://finolija.weebly.com/uploads/1/3/4/6/134625313/papolok.pdfIn PDF document text
    • https://kagiwegelugamed.weebly.com/uploads/1/3/1/4/131453087/vuborugikid.pdfIn PDF document text
    • https://pazixexawa.weebly.com/uploads/1/3/1/4/131437352/lutubedotoj-dagixunininatug-notuneda-vanokix.pdfIn PDF document text
    • https://jesaguxofugu.weebly.com/uploads/1/3/4/6/134659129/xumuvegimu-kuxukixon.pdfIn PDF document text
    • https://sunutefe.weebly.com/uploads/1/3/5/3/135350425/zufuvatavexoned_sesig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456393/normal_5ff54dee2c294.pdfIn PDF document text
    • https://rowimibakerideb.weebly.com/uploads/1/3/4/4/134494798/150900.pdfIn PDF document text
    • https://nipibodofabujid.weebly.com/uploads/1/3/4/2/134265940/lajebur-nexukozuw.pdfIn PDF document text
    • https://doxugibako.weebly.com/uploads/1/3/0/7/130776338/f92be2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454668/normal_5fc81393dec5b.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/86dd0872-606e-427b-9b47-2cb3590fa8b4/gekurikiverugopagibixirin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e72dd916-c9d7-4034-82af-26d90fd031de/luxowijebojunubon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96a8681e-3231-4103-8ac1-62294d3f6170/58542537903.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7655b7c3-3e6b-4dc8-b8ba-aa6f390065a7/7473127921.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/612d34a9-068e-47d8-b3ab-937006b27b86/ezra_pound_cantos_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92115ea4-26e5-45d8-8663-98da13b60345/wajulesumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8052743-4143-4686-962a-9b7842cdc342/usps_form_3602-n1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14931387-2367-414c-998c-43203e4dd38f/70903263595.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1639a5da-935d-4b31-96c6-334ce0dcd22d/69794568052.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fb183d3-8b30-4ea4-b767-5fb704462e95/evenflo_convertible_car_seat_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0c487cb-b1bd-43bd-8b8a-cd77c41a7fc8/python_list_comprehension_else_break.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49888dab-a8f3-41fd-ba92-e8b635354b09/how_to_do_a_drop_quote.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f86e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86E 5580 bytes
SHA-256: 54de09f5446bb61b2cb2389a5d59776104ba4812baf4ac2784828b0a76e563fe
font_01_sfnt_off00010b50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B50 5012 bytes
SHA-256: 41a904c926124a0c422dec2422e4c491ab9c8692d5e5d21544d7fce09411767f
font_02_sfnt_off00011d2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D2C 11908 bytes
SHA-256: 328335539da2d63808a4228a716038903cbe2750c72865f4d38e3d687a1bb434
font_03_sfnt_off000143f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143F8 16800 bytes
SHA-256: fca6dda984739bd8a8410c63d3c9c53fc5670d9d7945035f2d9d8a427f44d60c

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