Malicious PDF — malware analysis report

Static analysis result for SHA-256 150c0ec4719fb9f0…

MALICIOUS

PDF

90.9 KB Created: 2020-12-21 01:42:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a7d00a96eab7ff766d3ff7e549dd05af SHA-1: 5a235a56a52237522c3077f871caba93856a29a3 SHA-256: 150c0ec4719fb9f0f8b69c6e2a3e7425b54636219afd720aa3847eea2aa4069f
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to unknown or potentially malicious domains, indicating a link farm or SEO abuse tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffset.ru/strik?utm_term=feisty+sentence+meaning+in+urdu PDF link annotation
    • https://federadedeladol.weebly.com/uploads/1/3/4/6/134626130/fb52cc86252b6.pdfIn PDF document text
    • https://nodokesomizi.weebly.com/uploads/1/3/4/6/134656280/gidinovi.pdfIn PDF document text
    • https://radisowe.weebly.com/uploads/1/3/4/3/134366404/xuzixeri-tevadixeri-favelela.pdfIn PDF document text
    • https://lasomuvexovip.weebly.com/uploads/1/3/0/8/130813571/vozezeraxanipi.pdfIn PDF document text
    • https://betedodokadez.weebly.com/uploads/1/3/4/8/134882186/wesijuwifubajevuwum.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/3a7cb20b-b205-4b5a-93a8-932b12f8066c/dapaxurifamuzafabifituva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/440febc7-4b93-438f-9784-602ce3094cfa/49497203397.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a962daa-f4cd-4c55-a276-e7c18b9809cb/65525171263.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f7cba56-7ca8-43f9-ac69-d7229d9ce07a/bewisusovakisanosib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/161faecf-f045-41d8-976e-1b90cfabc28c/socially_awkward_simple_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80776df0-a8cf-4f88-a593-0635a9960b89/61710676072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e36351e-8ad4-4210-85e4-e4ce90704776/gizijupolo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc804350e6d73f00910ce2/t/5fdcf43eba118a6540a403b4/1608315968418/pamaxopedesepuwiwotikusa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62ffa4cc-c30a-4c9f-aef0-f347f5204cd8/do_white_candles_burn_faster_project_results.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_off0000f8b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B2 3220 bytes
SHA-256: 026737a625c7bd7e78a14fda95132db126b20c21642597b3f683b1ad6c53100c
font_01_sfnt_off00010430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10430 5284 bytes
SHA-256: 953407b723d21745ccb2a6f29a26df3c1c28c9bdc6016768c6903bfc8ab8da14
font_02_sfnt_off0001161e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1161E 11260 bytes
SHA-256: 9808bfa35fa0481a6a839be3a55aae68b85c83ab257741ba0b72d096bd1490ff
font_03_sfnt_off00013be6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BE6 20108 bytes
SHA-256: 05afa751644517cbadb2cecbd00e483fed0775bc03a22ab67668f168150675e8

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