Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e05ba7a69f1c83d…

MALICIOUS

PDF

70.4 KB Created: 2020-12-21 17:44:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 83327a63e6000a3c5f52a87cd8d192bd SHA-1: b897d8a9822e81939c8cdecd3da8422a0d95fd25 SHA-256: 5e05ba7a69f1c83d25ae20bf048347af9edf5742ffb7b77494fdc35d39b32230
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to known malicious redirectors or potentially malicious domains. The heuristic firings indicate that this PDF is designed as a link farm, likely to distribute malware or facilitate phishing attacks. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/strik?utm_term=my+three+top+up+balance In PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/sizuzudijajovupime.pdfIn PDF document text
    • https://sajenaviwabawi.weebly.com/uploads/1/3/4/2/134266368/povalo.pdfIn PDF document text
    • https://mozesewopizudal.weebly.com/uploads/1/3/4/3/134363743/433791.pdfIn PDF document text
    • https://fitarobut.weebly.com/uploads/1/3/4/6/134690469/gevibonukog-bajarogujutofiz.pdfIn PDF document text
    • https://gonufefimexej.weebly.com/uploads/1/3/4/8/134892828/giwaxavovu-kemazazowup-salepisitasuju.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/d1fc94d8-b7ef-43f0-a60b-939faf8fb633/guxawovolebedisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36ed4364-1b4d-4cb8-944e-eeb891bdc748/97406847229.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfeb102bbd74065800e14d/t/5fc38f4bfa04221c718df96d/1606651728281/17657735003.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe48142dd96f5918bb50fd/1606305814293/68326819384.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdeec5a97599144ebc7620/1606282951213/the_unfair_platformer_2.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4e08e8787e879898555ed/t/5fd0cc3bcb6bfe602c58f9bf/1607519291895/fufixedefidev.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6e107791da6493f66ed7c/t/5fcabd6f6fcc1c6c4614a35f/1607122288665/rafiboresezalimebod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2406bbc0-d7c1-48c4-bfec-13305f1e7c0e/inside_out_larry_crabb.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64483ff13940aa2640bfd/t/5fc6e1285fecd2174b4e9db4/1606869289216/siziwerefimelore.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e9e3bda9c57a97be47bf/t/5fc6d8d63ac9c763f4c58bbd/1606867159750/imo_video_call_software_free_download_for_laptop.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_off0000d91f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD91F 5092 bytes
SHA-256: 5c905a97b12d70e67bf3103b78729edb58054f523d7fe883acd0179e2bf33cb4
font_01_sfnt_off0000ea75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA75 10012 bytes
SHA-256: 5194fe3acc42631575950a125e27ee910ce4c9327f44a8959fb1bf6473a5c681

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