Malicious PDF — malware analysis report

Static analysis result for SHA-256 693fcadf597f6d47…

MALICIOUS

PDF

75.0 KB Created: 2021-02-10 18:43:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: d535f26a92b811b58cc568a76a30276d SHA-1: 452bfe2874221434f5ee062e60c86a880fabfa9a SHA-256: 693fcadf597f6d47fe461fd21995dc9ac2207e6710130f27a2d0d7485f02ea24
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to benign-looking PDF files, suggesting a link farm or SEO spamming technique. One of the external URIs, 'https://maypoin.ru/aws?utm_term=alkoxide+formation+mechanism', is flagged as suspicious. ClamAV detection and ML classification strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://maypoin.ru/aws?utm_term=alkoxide+formation+mechanism PDF link annotation
    • https://lezanixopedem.weebly.com/uploads/1/3/4/8/134886347/merimirujofebap_jipixilitu.pdfIn PDF document text
    • https://cdn.sqhk.co/toromerepowa/jgXo8jc/mipiwizagefoduzelen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411700/normal_60160c244eefb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444356/normal_6016d5c02a166.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453333/normal_5ff2e278a01eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419827/normal_6003dcc06d1f0.pdfIn PDF document text
    • https://cdn.sqhk.co/nodewanase/cgcYEdP/41910997976.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/ggSEyON/22971839000.pdfIn PDF document text
    • https://jikolugoxolij.weebly.com/uploads/1/3/1/3/131379047/7915943.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494430/normal_5fceeed9dd6f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467979/normal_601f3276b4b84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476566/normal_6020aa0835734.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455916/normal_60131911e5a9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410975/normal_601d095acecc2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481402/normal_5ff1e6b1a5028.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464078/normal_5fcdd924e25b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450721/normal_60143f38e205d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482847/normal_602180cfeeca9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/ielts_reading_academic_practice_test.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/83649203278.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/free_bhajan_songs_krishna.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_off0000e749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE749 5380 bytes
SHA-256: 61fec4ce4fc791d935fc87b972610830ac61363edbdd13e294f83ee0a0f1e648
font_01_sfnt_off0000f968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF968 10852 bytes
SHA-256: 3227a1ca282d8a25ea03792d58706ea6d62fe1cf7c6fcda3d051090c3660b723

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