Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e64a65472976e98…

MALICIOUS

PDF

112.5 KB Created: 2020-11-16 17:22:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2731e38045178e98bab58cf13cc60805 SHA-1: d4aa460f8389b81b0c6ee2888d9b598718038d21 SHA-256: 3e64a65472976e9879a6d3db74055b18a16e1eb8470d1ec41f81806577478b59
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 0.9997

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://traffine.ru/aws?utm_term=gavotte+from+mignon+violin+sheet+music PDF link annotation
    • https://pigaxusimip.weebly.com/uploads/1/3/4/5/134584788/3778213.pdfIn PDF document text
    • https://luleloneluso.weebly.com/uploads/1/3/4/4/134450102/4d15732b6d.pdfIn PDF document text
    • https://fupexorugukemig.weebly.com/uploads/1/3/0/8/130814763/40d4091c38.pdfIn PDF document text
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/3b61275676.pdfIn PDF document text
    • https://wopadutizibum.weebly.com/uploads/1/3/4/3/134306931/986238.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/eb83379d-5a2f-49da-94b2-0f85eebed4e7/sextant_in_terraria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d876b7fd-54e8-4cd9-aff8-0ebea9e17852/92973771985.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0e67431-2f01-4c0c-a4bc-3157f1be20f0/katy_hearn_build_a_booty_4.0.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/18920073438.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc00c360-c51c-460b-a569-e4ba48c6ea47/57689125304.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffb2e1e7-13f1-4561-8262-dcc69144c7e1/9793756706.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a203868-cfbd-4de0-914b-64962fc45093/79233073937.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e50e8ec4-12df-4967-966f-6df644157095/the_grape_cure.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

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_off00016a23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A23 4428 bytes
SHA-256: d8a2a8c23971faf143b35da9a7d4b5e8c744d4e7e53d7c98b902819193108932
font_01_sfnt_off000179a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x179A2 5388 bytes
SHA-256: 4f0a9ef379c27c1ee6dc02e3c21fc36d6b34076d42ab8998f4a3e96fe4a4940d
font_02_sfnt_off00018bd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18BD9 12328 bytes
SHA-256: 0ac82966bf9836beeb7d4d5e6dde24fe891665615092fef872075cf361634eb8

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