Malicious PDF — malware analysis report

Static analysis result for SHA-256 05d1370669630318…

MALICIOUS

PDF

75.0 KB Created: 2020-11-11 14:57:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f4daf067835910d141eec1045dba800c SHA-1: de2b1c938ed17337677b56d0cb7cbe1cb4da584a SHA-256: 05d137066963031864dda15a91c649e78b8960e3a9e7767147c86f0ff12821a0
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 0.9998

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://traffset.ru/123?utm_term=lewis+structure+for+na%252B+ion PDF link annotation
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/9320316.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/2cea7475-1eb6-4741-9dd3-4a2b403db3bd/4126389221.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12c489aa-47a4-4707-9084-196bd6647460/28748748094.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4d2a3d0-b109-472a-b5c2-405787434ac3/futititizoler.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b692cd24-5697-4cc9-bfca-4f2606a55b07/legixoraresil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/858e4cf0-aec8-4a18-8d28-ae2ed6a5eb4c/vuxikebatatiposokasiborur.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/dress_for_your_day_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2d7e9c2-2137-4044-9d18-c8e450396cbf/forrest_avenue_shirley_ny.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb69e5ac-3fa9-4f8d-b3bc-a3fe56554f4b/dezomiraka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de314827-60ea-4180-8692-b421d82376f4/6303044530.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/077f6ad4-1c51-4e88-a3a7-a513ae2278e1/homeworks_property_management.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7a20b64-1258-44b8-9c66-4adbb3e6041b/football_manager_2016_crack_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f70592f9-2a6d-46bf-aa8d-1df9fe406911/bozitagozawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9093309d-2355-4ebe-86d9-97a02bdc5a0c/73445417398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c91e903d-9c41-4482-876b-f7d5cda20958/the_handbook_of_yoruba_religious_concepts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a39a9857-6c4c-4356-83d4-c004cd85052a/viditusorusujaj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d18a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD18A 4876 bytes
SHA-256: a2e5b02f36601cf0ae9c8cab3d665ec69033420f41bb7c048c11bf6a6d2c0a5a
font_01_sfnt_off0000e249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE249 10912 bytes
SHA-256: 750d904feaf04c394615ad1f9e9ee170e888f1e6551a447d51f87c7af8f4842b
font_02_sfnt_off000107fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107FC 16076 bytes
SHA-256: 8e080451972fa98aa9e3536045215e62b9f74f9d761fc20c19baab760c38cae8

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