Malicious PDF — malware analysis report

Static analysis result for SHA-256 e63f5cb437c4bd60…

MALICIOUS

PDF

75.4 KB Created: 2021-05-23 12:45:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 25ad0f49f97579eee6ab7d8f4992967a SHA-1: 5107c9c10dff1ea7630af4077fe87e66b4b52b0c SHA-256: e63f5cb437c4bd6063657cddaa5b11fdfe77457a3b62fa1490d7aafb6cd4c845
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, identified as a link farm, and is flagged by ClamAV as Pdf.Phishing.Trojan. The embedded document body, though truncated, suggests a lure related to solar panel calculations. The presence of external URIs and the ML classifier output strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://golowaki.ru/strik?utm_term=how+do+you+calculate+payback+period+for+solar+panels PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4376878/normal_5fc686566b323.pdfIn PDF document text
    • https://nidabiweni.weebly.com/uploads/1/3/4/8/134865500/jurazasewitavi-jutipodal-wetujakurila-gigawepanu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425908/normal_6018693f31079.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446379/normal_602b2d1c490c2.pdfIn PDF document text
    • https://lipuxavevafip.weebly.com/uploads/1/3/1/3/131398459/7896595.pdfIn PDF document text
    • https://nezuwiwobitedut.weebly.com/uploads/1/3/4/6/134600585/7959c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368240/normal_5fcbbc2e696d6.pdfIn PDF document text
    • https://junadiger.weebly.com/uploads/1/3/4/6/134639337/xabigesanuburo_verefuba.pdfIn PDF document text
    • https://fisuzawagowesus.weebly.com/uploads/1/3/1/8/131857314/nibibevajuwiwovewu.pdfIn PDF document text
    • https://zepekofudi.weebly.com/uploads/1/3/1/4/131407423/98b5490e3f774.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393345/normal_6047547e52d89.pdfIn PDF document text
    • https://xomewugamu.weebly.com/uploads/1/3/5/9/135966817/mirinavomugim.pdfIn PDF document text
    • https://vinunawamezod.weebly.com/uploads/1/3/1/3/131380031/98740.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/lemefofutomapox/faforuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb16ce22-f2ff-494f-a4cc-5543190f054d/list_of_link_words_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/kotlin_style_guide_android_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/pezusudovipamadadiguzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be2f36bc-9ad6-4505-9ea8-0feba08ee125/tepuguroxuxemufizikutuwuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/541d59b0-3cfc-437c-ae76-038aa533e1af/free_sketchup_pro_for_students.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/17910571247.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/havering_sixth_form_teachers.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_off0000ea9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9B 5508 bytes
SHA-256: 69f3cdfb8b27b494319519efcd5a04c93fcc6a59eb588bea8c74bafc68772c27
font_01_sfnt_off0000fd79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD79 10076 bytes
SHA-256: e72880113dbbd2f905109080a50a048b20f88a3c95ce184ea0dc2d98b8a5ce0a

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