Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e4b914eecc7c261…

MALICIOUS

PDF

75.1 KB Created: 2021-03-11 03:19:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: b041c58a3382fa02cc84cbcefd8ab03a SHA-1: 2cb3e78e941b846bb95b3011b8549384ec07f315 SHA-256: 6e4b914eecc7c2618face1cf8cd227801127fce6075eb43a8ff08113ebc093a2
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The embedded URLs likely serve as entry points to further malicious stages or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=ley+de+boyle+aplicaciones PDF link annotation
    • http://wordwild-store.com/pasal_170_kuhpmjnrv.pdfIn PDF document text
    • https://zetovesejideze.weebly.com/uploads/1/3/1/4/131482946/lesegipubulikirowu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478414/normal_600a57f82a68e.pdfIn PDF document text
    • https://pabalosuto.weebly.com/uploads/1/3/0/8/130813917/48e63c08610.pdfIn PDF document text
    • https://fedebeforejasu.weebly.com/uploads/1/3/4/4/134498020/224e2accd648665.pdfIn PDF document text
    • http://senteber.site/33954894834eeilm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471238/normal_5fdc3dabc3bda.pdfIn PDF document text
    • http://tedesuvukifa.iblogger.org/how_to_cook_brisket_in_weber.pdfIn PDF document text
    • https://dewokazivefin.weebly.com/uploads/1/3/1/4/131437233/5265828.pdfIn PDF document text
    • http://presalle.xyz/dafoz6eonx.pdfIn PDF document text
    • https://tenojamerefu.weebly.com/uploads/1/3/1/8/131857247/6feb7a76bfffb5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501198/normal_5ff3f881dda04.pdfIn PDF document text
    • http://reduslim-sito.site/8176754868e4opj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://19f621d4-ab03-49b5-bf1d-c78de40104d4.filesusr.com/ugd/bc84a3_6c87aac8324a418884ecc4581458bccf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/10482932566.pdfIn PDF document text
    • https://fa90eb46-aa9b-4fd1-a2e8-e903ec8e50a4.filesusr.com/ugd/575fb0_0327558831314fc6898c54a06364c8a9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/xojamokajoxewu.pdfIn PDF document text
    • http://ganiwozipowure.epizy.com/19384076583.pdfIn PDF document text
    • https://502f924d-676a-41b3-8220-87c01882f600.filesusr.com/ugd/5a20bb_8e4da1b0d3d5465e84e651a783347dce.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/88911262301.pdfIn PDF document text
    • https://18e99e0c-7034-4a8c-9069-267580a295b8.filesusr.com/ugd/b337f5_623fc135de2748039a1b42fc9387464d.pdf?index=trueIn 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_off0000e2df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DF 5156 bytes
SHA-256: ce6ffb0b689c481e07b2bb1d3a520c811e1d3369b3883b67293ce8673bc5379d
font_01_sfnt_off0000f47d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF47D 12536 bytes
SHA-256: 0dba74b2acd3feb94e2c03391d395f0b1b2cdac87f31aea855ad85f1f3b59ba6

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