Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e548883bd3ef76…

MALICIOUS

PDF

92.5 KB Created: 2021-03-27 20:58:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fa66096125e1f00d41aa57aab597236 SHA-1: b91164fe182e7ec2cd119485b4d7fe5eba1c241e SHA-256: 60e548883bd3ef76c2a244d3c3cc60eb17f77d0ce97c564b9e98167734e3a6cb
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, suggesting it's part of a link farm designed to manipulate search engine results or direct users to malicious sites. The primary malicious URL identified is https://jumiwimov.ru/strik.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/strik?utm_term=how+to+get+rid+of+raised+pimples+on+face
    • http://dafagaketa.sportsontheweb.net/pdf_to_ms_word_free_converter_download.pdf
    • https://dorakipep.weebly.com/uploads/1/3/4/7/134747047/55e956.pdf
    • https://cdn-cms.f-static.net/uploads/4392439/normal_6026f38826c9b.pdf
    • https://surutadalonuta.weebly.com/uploads/1/3/1/4/131455158/295027.pdf
    • https://gorokawuse.weebly.com/uploads/1/3/4/4/134489158/4666815.pdf
    • https://static.s123-cdn-static.com/uploads/4365545/normal_5fe06d7787124.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://rokutore.rf.gd/how_to_login_facebook_in_pc.pdf
    • https://9c12218e-e157-4070-b33f-4467b3cb42bb.filesusr.com/ugd/0c60a0_41f70cb1b67a43bdb0ab689d9f386613.pdf?index=true
    • https://uploads.strikinglycdn.com/files/9d84ace5-abe7-4779-a357-1ef86d28607b/dolij.pdf
    • http://robebiwasufilu.epizy.com/36179090256.pdf
    • http://kuwitabetegipo.myartsonline.com/can_you_name_your_child_god_in_america.pdf
    • https://01c19f78-c7d0-441a-b56a-8672493f87de.filesusr.com/ugd/9d66c7_6522aeb59d3547c19c6d6426af7e8a29.pdf?index=true
    • https://uploads.strikinglycdn.com/files/2c8b8f03-a66e-40cd-be16-6ad39d56dfb2/17630802626.pdf
    • https://uploads.strikinglycdn.com/files/cc941116-c710-4c78-a201-a87481c52e72/xfinity_cable_box_not_working_after_power_outage.pdf
    • http://zenujasope.epizy.com/application_format_to_get_a_job.pdf
    • https://uploads.strikinglycdn.com/files/b16893a4-954e-4773-907a-d25e35490c17/html_style_link_color.pdf
    • https://uploads.strikinglycdn.com/files/5babcaf4-7310-4886-83ab-60faf6de04cc/93238745035.pdf
    • https://ff0b3df2-dc61-4aeb-9024-93fa9b5bc175.filesusr.com/ugd/aa14a9_f457fec6f8154f9cb1132f31085b2f34.pdf?index=true
    • http://namakanexir.atwebpages.com/how_to_service_trojan_golf_cart_batteries.pdf
    • https://f171294f-ed7a-4884-a773-1e826a512430.filesusr.com/ugd/20d861_dc6734ae53f742be8c8d1061c0e82339.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011d92.bin
8d52d733edd220ae973e30db969a2f0cf810cce3ad86424047280cb83cc93eda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D92 5316 bytes
font_01_sfnt_off00012f9e.bin
7ab9cef54f95258cec97def51aaf38daace0fdad3d6c58cd27856090681f2f38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F9E 11396 bytes
font_02_sfnt_off0001563e.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1563E 4324 bytes

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