Malicious PDF — malware analysis report

Static analysis result for SHA-256 76449f49cfa9814e…

MALICIOUS

PDF

75.6 KB Created: 2020-11-18 19:11:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a774d73e1c0cf33f2ff30d7bdfd53bf5 SHA-1: da4ebef26b0a953ed0f5aaeda24d19f89f95e54f SHA-256: 76449f49cfa9814e528051f0b4b6baea07563360fefb7c0061605b3b8583524b
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://traffine.ru/123?utm_term=formato+carta+de+poder+para+tramites PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4477163/normal_5fb0168869a39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366627/normal_5f88d087267cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404514/normal_5f9d1c10e0e71.pdfIn PDF document text
    • https://mogazikazalag.weebly.com/uploads/1/3/4/4/134440800/e11c986ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450746/normal_5faaa63e9109c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380887/normal_5f8b98a73a49d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393179/normal_5fad8b4516426.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f8f9fb67a3a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371244/normal_5fa38e268df8a.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/aa72dc0b-6f20-40f0-ab6e-f7aab812d971/vimoximuzuwirewawuwafiwax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f35a097-7a17-47a1-b986-66a523659d94/91959939129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c97a5d3-7ae0-4241-976b-3b36ec1011da/when_is_resident_match_day_2020.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD8 5140 bytes
SHA-256: 9e74240ea3b33819fd7bdf156bc67fc4327c07bc59d742bfacd747a95fdce2d1
font_01_sfnt_off0000de2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE2E 1636 bytes
SHA-256: c2514be52424705deee1df194651f67c6233aba8eb893a6b19affc7ab53892b3
font_02_sfnt_off0000e665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE665 11172 bytes
SHA-256: 2a53541abf98c9aa07458e3c2da9e0e47bc96f057a548982594c3b2f5d76959f
font_03_sfnt_off00010b15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B15 16076 bytes
SHA-256: d286e8b4d1cdafc5f769987bdccf7a6368ad55d0d3b8f98fd56bc2ae223999f8

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