Malicious PDF — malware analysis report

Static analysis result for SHA-256 44701dd951aab0b7…

MALICIOUS

PDF

64.5 KB Created: 2020-12-08 16:40:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 959704165eb8a34b01e7e363244f1de8 SHA-1: db44df8f89f99e3d962aa003ede558cc1f6d17f9 SHA-256: 44701dd951aab0b7cf1b5195014849fe260d52b6b4025190e9b9f60ec3ee785f
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/strik?utm_term=remington+hair+straightener PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449627/normal_5fbf40d56fed7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373264/normal_5f917aa3b0588.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473384/normal_5fc84bf54b771.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375194/normal_5f944fbd3678c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370740/normal_5fa82871d4bad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501479/normal_5fcd29d4b1574.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444110/normal_5fa8210863c9e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jaloto/21451853576.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/48481205199.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/winomalefetikuregifomu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1bb67bdb33045eec822d5/t/5fc310259ee0f32b87b82c85/1606619174281/23673671896.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/19783619165.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/murray_explorer_go_kart_manual.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_off0000c1a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1A7 5076 bytes
SHA-256: d5ab7ca74edb83afc4d3657278054e3793d153d6191450984062a6c849cbb798
font_01_sfnt_off0000d2c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C0 10128 bytes
SHA-256: b262911d7197443a6faba429924551a2416e78234f441d2a77673a235db4e596