Malicious PDF — malware analysis report

Static analysis result for SHA-256 5112c3bf2ebd39a0…

MALICIOUS

PDF

77.7 KB Created: 2021-02-22 04:43:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a7a563f237cb13f32dd06844230a2982 SHA-1: 48a5f7ab8eff541f1aaef87b11d36876a2b082c0 SHA-256: 5112c3bf2ebd39a0cbdd8f4cff928f547fedb8a276c7687f5b90f00c22d3f095
196 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is a phishing lure and a link farm, with a high ML classifier score and ClamAV detection. The document body, though heavily garbled, contains text suggesting a movie title, likely a pretext to encourage clicking the embedded URL. The primary URL points to a domain associated with phishing and malware distribution, and the heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, suggesting a campaign to distribute further malicious content.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://seumenha.ru/strik?utm_term=cuenta+conmigo+pel%25C3%25ADcula+completa+en+espa%25C3%25B1ol PDF link annotation
    • https://cdn.sqhk.co/fudikuzi/hhaihij/75585721146.pdfIn PDF document text
    • https://kixumiziri.weebly.com/uploads/1/3/2/6/132681985/teteduwabaw.pdfIn PDF document text
    • https://zaxezoxixuj.weebly.com/uploads/1/3/6/0/136097133/fukubalolurotafon.pdfIn PDF document text
    • https://cdn.sqhk.co/jidulopavoji/icKLPlV/dogasebinurizuzipat.pdfIn PDF document text
    • https://jufesuzukexo.weebly.com/uploads/1/3/5/2/135294717/newesawamepil-xasobagigex.pdfIn PDF document text
    • https://wipowolulufobud.weebly.com/uploads/1/3/1/4/131437369/838765.pdfIn PDF document text
    • https://rudazijix.weebly.com/uploads/1/3/1/4/131453676/puboximobolekabeda.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nexiluwaxawu.epizy.com/61743121062.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/jezesukudoviwebarinixatum.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/dufeju.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/suladesomomezoxa.pdfIn PDF document text
    • http://vubalek.epizy.com/riwelurobumobexifibiku.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/b_tech_full_form_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/speak_your_mind_in_writing_c1.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/baveva.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_off0000effd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFD 5328 bytes
SHA-256: 899cd7f619ecc01d901a2864a0cb17111265e7ebc96b8a372d55a7f073f86dbf
font_01_sfnt_off000101d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D3 11536 bytes
SHA-256: 648ea29cbc2989cade02cb93555ce31fc100ffb784b109f8bb4b9b373c8cc469

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