Malicious PDF — malware analysis report

Static analysis result for SHA-256 be607ee36536d84f…

MALICIOUS

PDF

83.4 KB Created: 2021-02-19 00:47:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 671e140759aafedcfe8c124b490c138e SHA-1: dfb727ebe361c5911f0bfd72b0246e09800139f0 SHA-256: be607ee36536d84f5e105aa7d17ce1c1c66f96b4529b0e9a62f9b5ba85a38e99
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a large number of external links, identified as a link farm, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of numerous external URLs points towards the document's role in directing users to malicious content.

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
  • 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://baarspo.ru/strik?utm_term=briggs+and+stratton+500e+series+parts+manual PDF link annotation
    • https://cdn.sqhk.co/jujejorule/hIoYgdp/xomowe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468537/normal_5fcfe47d906e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465136/normal_5fde685182406.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444117/normal_5fd2c570f0515.pdfIn PDF document text
    • https://cdn.sqhk.co/didatife/eWhbWji/zombie_killers_apocalypse.pdfIn PDF document text
    • https://cdn.sqhk.co/wireriduwude/Ocjdqjh/translate_english_to_chinese_traditional.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446045/normal_5ffea4b24b766.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480886/normal_5fda31770ca79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403818/normal_6018008b102c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529281/normal_5fee2d6e7b1c4.pdfIn PDF document text
    • https://sufudoni.weebly.com/uploads/1/3/4/8/134853368/282d77a4d69.pdfIn PDF document text
    • https://fulojexerewo.weebly.com/uploads/1/3/5/3/135345176/pujutunumare.pdfIn PDF document text
    • https://jotavitot.weebly.com/uploads/1/3/0/7/130738821/5c300347531e721.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482207/normal_5fc5f98fbce13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372737/normal_60199645f30f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460968/normal_5fd679480987d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454421/normal_5ff62c4749aca.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/wazorixekunafob/weber_spirit_2_e310_parts.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_off0000fbbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBD 5596 bytes
SHA-256: fa4041bafec360bd05d8beef369161d133a349a1c2a580eec801721368b2b30d
font_01_sfnt_off00010eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EAA 15680 bytes
SHA-256: 5c121a1a8e89abd6a4bb7177827214beefc0f7e2c2edb8c241727d93bce80920

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