Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3dfbb9175100448…

MALICIOUS

PDF

70.0 KB Created: 2020-11-23 14:44:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 6a4f3da2085671ec34e5a0ea99ccca97 SHA-1: 93cbb702bb0f3ebd781ced4eca83d562d8ff6661 SHA-256: e3dfbb91751004482a92d8c94d4b49651a5f7ad467cfe773353268f1b3cacbf7
244 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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/strik?utm_term=medium+brand+style+guide In PDF document text
    • https://rigafefabapamum.weebly.com/uploads/1/3/4/4/134486683/makelup_manekuvora.pdfIn PDF document text
    • https://terarawuterojuz.weebly.com/uploads/1/3/0/7/130739827/6febba2b6.pdfIn PDF document text
    • https://gekeforoka.weebly.com/uploads/1/3/1/4/131438206/69928cd717bbfc.pdfIn PDF document text
    • https://dafufiwe.weebly.com/uploads/1/3/4/3/134368649/768661.pdfIn PDF document text
    • https://getedizexagan.weebly.com/uploads/1/3/0/7/130740146/90e6d.pdfIn PDF document text
    • https://pudafakomixi.weebly.com/uploads/1/3/4/5/134506615/85642465740.pdfIn PDF document text
    • https://zotorakiv.weebly.com/uploads/1/3/0/7/130739478/8264358.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383131/normal_5f8deaaf22e8d.pdfIn PDF document text
    • https://wilosobofixi.weebly.com/uploads/1/3/4/8/134858013/negamututex.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/wetasigojat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/60da39ed-abc9-4230-9abd-aa56bbb8069d/16039647712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ee59d7e-0f5b-4ccf-b921-ec395d31a1fb/5250941532.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_off0000c6c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6C3 5164 bytes
SHA-256: 24f5949fcd095bda45456ca55128e157a1ebc25c155ae2e69436abacce64cc44
font_01_sfnt_off0000d834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD834 10924 bytes
SHA-256: 73ac370173f8258f150713977d41ff3185052f1f5e3ef57e2baf2b08285de7c0
font_02_sfnt_off0000fd51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD51 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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