Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8cd2a47e0f126f8…

MALICIOUS

PDF

70.6 KB Created: 2021-06-10 04:48:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 199f1523c4288c4ab2118c93d344c733 SHA-1: 227e3d99e02b823abfff4abb534129ad2ccd0b70 SHA-256: c8cd2a47e0f126f88c4736dad0f266d3be84f3b8afcbf715a734476b1eebe261
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or redirection scheme. The primary URL observed is https://garglob.ru/pbw?utm_term=wef+global+competitiveness, which likely serves as a lure or initial point of contact for a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://garglob.ru/pbw?utm_term=wef+global+competitiveness PDF link annotation
    • https://nigukaxo.weebly.com/uploads/1/3/1/4/131453065/wekirexu.pdfIn PDF document text
    • https://nobujowufovipi.weebly.com/uploads/1/3/4/6/134636268/2a6dcfe20618c4.pdfIn PDF document text
    • https://rogubofiduga.weebly.com/uploads/1/3/1/0/131069879/fokuva_dorikowikuki_dudina.pdfIn PDF document text
    • https://weduxuvup.weebly.com/uploads/1/3/4/3/134308116/ferox.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376098/normal_5fca449c6a151.pdfIn PDF document text
    • https://vukibawurop.weebly.com/uploads/1/3/4/6/134601902/2211653.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383452/normal_6052172659de2.pdfIn PDF document text
    • https://rurujopolobadez.weebly.com/uploads/1/3/4/4/134444805/judezevipegale_kuviwutuzenuv_xekiludefagok_rotilevego.pdfIn PDF document text
    • https://mizefowoxeze.weebly.com/uploads/1/3/4/4/134485365/0edc91f50.pdfIn PDF document text
    • https://kawokuxaletufe.weebly.com/uploads/1/3/4/3/134345859/dowarilopanuw.pdfIn PDF document text
    • https://ditiwuta.weebly.com/uploads/1/3/1/4/131483603/4581561.pdfIn PDF document text
    • https://ragumavul.weebly.com/uploads/1/3/1/4/131483371/mekudifunod.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/3324f1b0-963d-4883-9fb5-523ea54ab511/john_grisham_books_in_order_of_popularity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b2bc09d-5889-4962-9ee6-803df9d66873/vibivusomumefokojevun.pdfIn PDF document text
    • http://barumena.pbworks.com/w/file/fetch/144740709/adobe_premiere_pro_cs6_free_download_full_version_blogspot.pdfIn PDF document text
    • http://mupalunava.pbworks.com/f/39493035634.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_off0000d6c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C3 5452 bytes
SHA-256: 133f882b99e23ae2d6bf6d010aa626a2b861085e5d857f10319e7e897eb7bf2b
font_01_sfnt_off0000e95b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95B 10604 bytes
SHA-256: f79db49dae8163523239d7b8ad0924f8eeef1e3c552434f1be9e2170cff11ee6

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