Malicious PDF — malware analysis report

Static analysis result for SHA-256 70029a695ad3da7b…

MALICIOUS

PDF

71.5 KB Created: 2021-04-02 17:00:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 010c65dbf872e07af5111dacd6817025 SHA-1: 260b5096eb5b443699e747c410d43b971697a137 SHA-256: 70029a695ad3da7bb573f3c9b3802d99eeefcabfce2ef5049aa720147904db08
126 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting services, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to educational material, likely to trick users into clicking the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://golowaki.ru/123?utm_term=literal+and+figurative+language+worksheet+grade+4 PDF link annotation
    • https://femomupine.weebly.com/uploads/1/3/4/4/134458898/1270803.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460058/normal_6009168c3c752.pdfIn PDF document text
    • http://davegopodowog.iblogger.org/powilifaxatagoweb.pdfIn PDF document text
    • https://tunimesepet.weebly.com/uploads/1/3/1/4/131455680/goxalujuvezuwa.pdfIn PDF document text
    • http://dikerulaba.22web.org/slopes_of_parallel_and_perpendicular_lines.pdfIn PDF document text
    • https://jowidizikut.weebly.com/uploads/1/3/0/8/130874332/9672870.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444644/normal_6046463e8253e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453332/normal_6032886cd6b7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380230/normal_60623c4c019cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454670/normal_5fda441d16ce1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412379/normal_6041d2ad51cfa.pdfIn PDF document text
    • http://fulukegoror.getenjoyment.net/47565366688.pdfIn PDF document text
    • https://gepufefodu.weebly.com/uploads/1/3/4/0/134013389/joviv.pdfIn PDF document text
    • http://dosefokinuvulo.mypressonline.com/bioenergtica_alexander_lowen_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475847/normal_5ff7d7af54ab4.pdfIn PDF document text
    • https://jonipafatanepa.weebly.com/uploads/1/3/2/7/132741476/1799385.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fumibilulad.atwebpages.com/48882697717.pdfIn PDF document text
    • http://tefadipa.epizy.com/11403152044.pdfIn PDF document text
    • http://mukadepokexow.epizy.com/ansible_template_full_path.pdfIn PDF document text
    • http://fupazufeg.rf.gd/eritromicina_suspenso_bula.pdfIn PDF document text
    • http://rulamiji.onlinewebshop.net/affixes_and_suffixes.pdfIn PDF document text
    • http://wajiletum.epizy.com/kuragalakogagononezunerom.pdfIn PDF document text
    • http://magonusu.epizy.com/alberta_blue_cross_non_group_coverage_forms.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_off0000d6c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C8 5416 bytes
SHA-256: 1c747aa51c8c1aabe8ae0f89e3cabc99ed63e187078d94268bfcc7e90f076778
font_01_sfnt_off0000e94e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE94E 11136 bytes
SHA-256: 698db31be58dbd767f22ce5f7a978599c1a204cc4a5075b0c357f80e12ae62b1

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