Malicious PDF — malware analysis report

Static analysis result for SHA-256 1565fe46877fc480…

MALICIOUS

PDF

126.9 KB Created: 2020-12-15 14:03:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ae1d035a94f4e29255109b9c65dc6e71 SHA-1: d497c4469c5832054c834c95d98c3bf90f1a2bcd SHA-256: 1565fe46877fc480a2ea67579c6794f8a4b6a241f5685baa1b9153cb846f4fd0
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 by the PDF_SEO_LINK_FARM heuristic, suggesting it is part of a link farm or redirection scheme. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically classified as Pdf.Phishing.Trojan. The presence of embedded URLs further supports the malicious nature, likely directing users to phishing or malware hosting sites.

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://traffnew.ru/aws?utm_term=hogwarts+mystery+gobstones+answers+tonks PDF link annotation
    • https://talunijepi.weebly.com/uploads/1/3/4/5/134599753/tabokoregageb_desegale.pdfIn PDF document text
    • https://kulufitobapesad.weebly.com/uploads/1/3/4/4/134443603/5777135.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378386/normal_5f8a81dedcb87.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/henghuili-files/kudelixeniviroruwizurakun.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/rujoseditavunedosowul.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce70300c09975df17cda89/t/5fd072ffa4b4ef2db6a6212e/1607496449964/91919177185.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5ca83f9866f3fd2f56add/t/5fc6b2a33485235c86b4ecda/1606857379295/40176928850.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc534d7be9b693951270167/t/5fc5e83a4f98375720ab17d7/1606805562428/cheap_studio_monitors_pair.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a9efc6d9645836428c95/t/5fc6dda4ad3e641192349d91/1606868389313/bapamivugumikiketizozir.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/98612047765.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4f8ee085bf90c0e173f98/t/5fd66cc8154d727871ed400e/1607888090446/37468588472.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_off0001b794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B794 5332 bytes
SHA-256: 57117978db48fe069cb645af08d4fc68ca42436983be036d62a6afb0405a8251
font_01_sfnt_off0001c9bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C9BC 10776 bytes
SHA-256: 1e1b1040a7f301d19d8d20d8bfb2e32f4d0b77fea5adf3140c0c1c06beec9b26

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