Malicious PDF — malware analysis report

Static analysis result for SHA-256 303342a3a93c9712…

MALICIOUS

PDF

68.8 KB Created: 2021-01-05 20:35:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 4f368ebe9e310a56c229c39dd0f69548 SHA-1: 0aced61ac71d7280e9ca335bec2d089a5eb45ac5 SHA-256: 303342a3a93c97121ed4aa89be35441d4cb33a02817f0573c1f1628f0764b9a4
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, suggesting a malicious intent to manipulate search engine results or redirect users to potentially harmful sites. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan. While no scripts were explicitly extracted, the presence of numerous external URIs indicates potential for further malicious activity.

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://trafffe.ru/aws?utm_term=bollywood+song++website+list PDF link annotation
    • https://zufuvedowenekoz.weebly.com/uploads/1/3/4/8/134861022/pikibira_poruremofukebo_balesis_lelefixomo.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/kodamolasamim_sogotesexisalav_gizuwewiv_kedewifofazi.pdfIn PDF document text
    • https://juvikenozenukun.weebly.com/uploads/1/3/4/3/134322787/kirok_datokunozi_zisozonaz.pdfIn PDF document text
    • https://kaperimivegorew.weebly.com/uploads/1/3/4/3/134371305/nugomivefap.pdfIn PDF document text
    • https://rilemiwekeb.weebly.com/uploads/1/3/4/5/134599700/ab4de8.pdfIn PDF document text
    • https://jirorenuges.weebly.com/uploads/1/3/0/8/130874518/4c386.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/winumigutam/vinetosozejelegavoz.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/java_64_bit_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/impulse_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/22857101861.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/color_wheel_hair_toner.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/venovemojirununenokop.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/90811422626.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/rukupekixepidazanemaj.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_off0000d16c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD16C 5068 bytes
SHA-256: f2bce34b9f1a8885cdeeafe4d039a0c9218aa27b9d7e5de39e8cfd8c4649c91b
font_01_sfnt_off0000e2dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DC 10556 bytes
SHA-256: b8ad0bccf95673400b427ad9832d8934b0597665e84e288d9764cb8fa0e45af1

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