Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e8142117652a397…

MALICIOUS

PDF

95.4 KB Created: 2021-06-11 22:41:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 364ed75527e0cec39b4479f83def5789 SHA-1: eddafc60dca492be2ff5ae58f8b82c149ac141dd SHA-256: 7e8142117652a397bc4d1281c79ca34d193c441353acc6b705782efeef5779d2
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of numerous external URIs, many hosted on disposable domains, suggests a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains references that align with phishing or scam lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://synerhu.ru/pbw?utm_term=oru+adaar+love+movie+in+tamil+dubbed PDF link annotation
    • https://static.s123-cdn-static-d.com/uploads/4403408/normal_60b54dd99e66b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382618/normal_6026ce4eb037e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453553/normal_5fc6f0fb1bd6f.pdfIn PDF document text
    • https://pilinosaw.weebly.com/uploads/1/3/4/8/134852056/690aee.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4460966/normal_60b1ae1e984d2.pdfIn PDF document text
    • https://jibeguviju.weebly.com/uploads/1/3/4/7/134723477/64439bc4b.pdfIn PDF document text
    • https://pewaruraxifazof.weebly.com/uploads/1/3/4/3/134340131/499b3c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455396/normal_6005b26a06ad1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370266/normal_5feed0dbd5af8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469847/normal_6068dd435e36a.pdfIn PDF document text
    • https://lakerevuko.weebly.com/uploads/1/3/4/6/134654656/vidirajujolijuda.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4381971/normal_60b4429fc24b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456984/normal_6000bfc41ee36.pdfIn PDF document text
    • https://lemorixumo.weebly.com/uploads/1/3/4/7/134748879/7209997.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://pinurakus.pbworks.com/w/file/fetch/144549195/60945553683.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88331b04-91b3-49b7-a73a-73d0739d8b28/fenepovazozipasadexufe.pdfIn PDF document text
    • http://kokoxudalux.pbworks.com/w/file/fetch/144809586/how_to_find_the_volume_of_an_irregular_shape_using_a_graduated_cylinder.pdfIn PDF document text
    • http://bofamawetodo.pbworks.com/f/romiette_and_julio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3c6e0a9-4e6b-4e3a-ae3c-00427de8ff2f/gaviferisubar.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
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f732.bin
14d68a73a8a3ebadbc77830c32e46637e36bb37b280f68e7344d1c3f8b9c9048
pdf-font-stream PDF embedded font (sfnt) at offset 0xF732 4904 bytes
font_01_sfnt_off000107b8.bin
55e39ca93a35be8ecf084e3c29682f8974dd2041eefccbf8d4b5a0e17d1dd613
pdf-font-stream PDF embedded font (sfnt) at offset 0x107B8 9348 bytes
font_02_sfnt_off00012727.bin
54cb3144e78956beca518d4027e14c72428263dc11d0efccb009a845dd4d8675
pdf-font-stream PDF embedded font (sfnt) at offset 0x12727 10692 bytes
font_03_sfnt_off00014c28.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
pdf-font-stream PDF embedded font (sfnt) at offset 0x14C28 16164 bytes
font_04_sfnt_off0001613d.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1613D 4324 bytes