Malicious PDF — malware analysis report

Static analysis result for SHA-256 62ba64bb253d5690…

MALICIOUS

PDF

43.8 KB Created: 2020-11-03 23:42:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 727a35c0b08606de677cc03e2275209e SHA-1: 802bf4c898e9637e7ccebe7c44f12827932b8287 SHA-256: 62ba64bb253d5690985052735b289cd60a622de91d8da9a081ad246a19f74c96
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm for SEO manipulation. One prominent URL, 'https://ggtraff.ru/123?keyword=broadview+middle+school+danbury+ct+website', is flagged as a malicious redirector. The document body itself contains this URL, attempting to disguise it as search results. No scripts were extracted, but the presence of a malicious redirector and the link farm structure indicate a malicious intent to direct users to harmful content.

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=broadview+middle+school+danbury+ct+website In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374708/normal_5f8d5d27e718f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368238/normal_5fa1b9556d714.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367916/normal_5f96c664ba655.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/28ecdb65-63f7-45aa-80b8-154fd0f5e79e/antigone_test_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/mumiwadamulisokub.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/56511890742.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/92370697989.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/460fd526-b5b7-4e68-8207-e37df25632a2/76651696592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8272/5572/files/vugipofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4768/1181/files/55952729686.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/nunitegoxejekasinabid.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/kuzimaboxime.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_off0000689d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x689D 5624 bytes
SHA-256: 37b88c76252b6180da8f3fc7725a69072a571ce3578d4ab4b7cb4848d8645d82
font_01_sfnt_off00007ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA4 11236 bytes
SHA-256: 31a05a63c14f133120f8592d02ce83300c786dc228f947528d80b8dd5a3fc92f

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