Malicious PDF — malware analysis report

Static analysis result for SHA-256 c018a20b005752df…

MALICIOUS

PDF

74.1 KB Created: 2021-03-20 00:44:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47f613a2f0a584c6cbfdb10163e926f6 SHA-1: 789727aae125101d31889fa77a0b417f39e26896 SHA-256: c018a20b005752dff7f452f229a4c88a0ac2bf11f37daf008504409aaa24109c
164 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains a large number of external links, suggesting a link farm or phishing attempt. The presence of a 'download button' lure further supports this. The file's structure and embedded links point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://midufefew.ru/award?keyword=brahmanda+purana+pdf
    • https://rotisozag.weebly.com/uploads/1/3/4/6/134679288/75578f9.pdf
    • https://tejubodefi.weebly.com/uploads/1/3/4/3/134351051/finus-wukuvepugetam-regenabop.pdf
    • http://topfrag.rip/converting_factored_form_to_standard_form_worksheetbpeqw.pdf
    • http://nijalatol.mypressonline.com/29645499481.pdf
    • https://kelebewo.weebly.com/uploads/1/3/4/3/134359650/bosofu-dimijilowiz.pdf
    • http://insurancesouk.com/25810476523frs7i.pdf
    • https://fopizute.weebly.com/uploads/1/3/4/3/134315067/xadawididuku_gajum.pdf
    • http://noxaduva.mypressonline.com/better_man_tab.pdf
    • https://zisediri.weebly.com/uploads/1/3/1/4/131411341/e21bc3f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://945b3f91-9c76-4178-be32-f0dab3cfe2c6.filesusr.com/ugd/8d5d69_2dba973cd66c458c8f89dd26bb02ba3e.pdf?index=true
    • https://uploads.strikinglycdn.com/files/586b9e12-2bc8-4022-bbba-4faf84071f74/32937132879.pdf
    • https://45f61934-b4a1-4335-a9e3-e142d9465b5b.filesusr.com/ugd/0dd040_1fbd637988d543a299999d63308dd779.pdf?index=true
    • https://uploads.strikinglycdn.com/files/bc53ae65-5af1-4149-975f-c4feedc16f5f/the_school_for_good_and_evil_book_6_release_date.pdf
    • https://26f2e344-8444-46ea-90c9-5a893bcc2fb3.filesusr.com/ugd/b8c837_aaac40db5ec04b4b8d5a6eb73bf57ace.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c11c8b2d-a167-4d25-8694-9dfcd749e678/is_the_10_day_green_smoothie_cleanse_safe.pdf
    • https://uploads.strikinglycdn.com/files/53159a07-b8fe-4117-b945-ea769d3e909a/32277797972.pdf
    • http://zipemoluligera.myartsonline.com/wixenuteveborumadituxigi.pdf
    • https://438e95ed-c264-4db5-88d3-1a9ca8b91b86.filesusr.com/ugd/733c1f_0c9c79eac6bb4d249d31f67ad9e3c42b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/1b623040-81b5-4fae-8735-aada893b86b0/risasudileluz.pdf
    • https://c1e70603-6ca1-47bc-880b-b60d7d434995.filesusr.com/ugd/df625d_1cfe630ada2b44c692d279cecf7f321d.pdf?index=true
    • https://e5447efa-8854-4d04-834e-f0bbd7438c8b.filesusr.com/ugd/ac612b_32fc646c9c834a878f1f721b0e0d2689.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e499.bin
074649552999a4c74c1d8bbfde22e01ea43fb361e11334ef1daef5dde2ea487a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE499 5120 bytes
font_01_sfnt_off0000f5de.bin
0f6fe24bd2eb5e3269bc43f3f502ad1a8ee1bfa8e7e50cd0e443d5f7c3ba2325		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5DE 11020 bytes

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