Malicious PDF — malware analysis report

Static analysis result for SHA-256 46d72d8e55d099e3…

MALICIOUS

PDF

36.1 KB Created: 2020-10-30 22:20:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 7c809936adcbfc5045066cf012f64b23 SHA-1: 12fc4060c368bd663b3e3c3dfdb2ebca60d70fdc SHA-256: 46d72d8e55d099e3d0018338a0e6a4104ab6253adb56ae1de82a0649c0c9a71b
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with at least one identified as a known malicious redirector. The document body, though heavily obfuscated, contains references to URLs that are also present in the embedded link list. This suggests a campaign to drive traffic to malicious sites, potentially for phishing or SEO spam.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/123?keyword=left+of+bang+website In PDF document text
    • https://cdn-cms.f-static.net/uploads/4407793/normal_5f9975e9e533a.pdfIn PDF document text
    • https://ziroluberunoreg.weebly.com/uploads/1/3/4/4/134456507/wenamul-xaditixexer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f93a25899ccc.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/xetasif/bopukodotewox.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/history_of_walmart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/8519/4150/files/transfer_pricing_guidelines_2020_oecd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7847/8743/files/nuclear_decay_worksheet_answers_210_84_po.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/4987/7143/files/cardo_packtalk_manual_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9481/1819/files/17331904010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7847/8743/files/zosujipawem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f397008-bcf4-414a-be2f-d1853e5de39e/wilderness_navigation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0026/8453/files/55149619743.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_off00005046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5046 4980 bytes
SHA-256: 10331fd862adaabbb81730c3203437971a77fece03f6741fec1c70d400c18eba
font_01_sfnt_off0000616d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616D 10148 bytes
SHA-256: 2dcbb245d1952c84ce487027b44fb4463dd3c67e3b4e73794607c6f1946f2c5d

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