Malicious PDF — malware analysis report

Static analysis result for SHA-256 c69550ea7ad32cf6…

MALICIOUS

PDF

76.9 KB Created: 2021-05-31 00:58:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: bfaf276b6a754cc3bdad2084c8062946 SHA-1: 594a43f2c83dc57ba967c5c579cdf4108e4f516e SHA-256: c69550ea7ad32cf67d0f6c2a9eee9122fe408edc864423e274504314240aa6f3
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used in phishing or SEO link farm attacks. The primary malicious URL identified is 'https://gimoguvi.ru/strik?utm_term=ge+universal+24922+remote+codes', which is likely intended to redirect users to a malicious site. The presence of a large number of external links and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggest a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://gimoguvi.ru/strik?utm_term=ge+universal+24922+remote+codes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383695/normal_5fd0f82605bc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407996/normal_5fdbe8f632199.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388825/normal_6044d301bc6f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418191/normal_6049ee1a63f8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368991/normal_5fe027c322991.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454420/normal_602b6b188b0b4.pdfIn PDF document text
    • https://kebotufu.weebly.com/uploads/1/3/4/7/134735966/tuvedumefabew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451044/normal_602452f1e587f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373997/normal_5fe3e1996d4de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378830/normal_5fd90d9f8c18c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388046/normal_604494135be4f.pdfIn PDF document text
    • https://febapemideb.weebly.com/uploads/1/3/0/7/130738739/bf5bdb2c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458122/normal_604aa478f3234.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476133/normal_5ff9356ced9b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467979/normal_606b1e8a6280c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418368/normal_5ff5213f0b3c6.pdfIn PDF document text
    • https://jufoximivovanad.weebly.com/uploads/1/3/4/0/134013024/lepobazujosebalene.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/ae240a9e-0c4f-4368-bb7b-a0d340b6b56c/gadegapulakobetikuduzukut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c1ea712-22cd-483e-9a4c-4e0dc1467b73/how_to_make_burger_sauce_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7804959-855b-4c69-a5ba-8aa793fa21c1/dungeons_and_dragons_character_sheet_word_document.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6b7d5c0-e785-48a3-bd48-c394255fa86a/23574730269.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd29f4ec-3813-4a43-815b-b4056dbdb2b2/how_many_words_are_in_the_cat_in_the_hat_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89df770d-6074-415f-af61-a4a2c5e1eeb9/how_do_hardware_and_software_work_together.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24a2d90f-f113-43f7-afd6-6ab11f38f3e1/vtech_answering_machine_message.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/027794d6-83b0-4608-bb78-d75e9001ab04/fiche_de_lecture_la_gloire_de_mon_pre_marcel_pagnol.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_off0000ed19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED19 5552 bytes
SHA-256: 8ed51e0511823938f9d310f9e6e18c52498bc647e9120446fab1a566ab8221b8
font_01_sfnt_off0000ffef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFEF 11148 bytes
SHA-256: a49793b39ffa37a048b8241dab4188952a21230e7f53343887e9197c8652eb35