Malicious PDF — malware analysis report

Static analysis result for SHA-256 363d712598419779…

MALICIOUS

PDF

68.1 KB Created: 2020-11-25 12:34:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7fb9067bb32f34423c4b8de5b793251f SHA-1: d6c9d9081511d00bad507cdbed61954b2169c77a SHA-256: 363d712598419779a5033de754ecea37296716fb390be865d2bfc38db7814291
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://trafficel.ru/strik?utm_term=antennas+for+all+applications PDF link annotation
    • https://kusebedanosude.weebly.com/uploads/1/3/1/1/131163667/zomulitonosijobalujo.pdfIn PDF document text
    • https://kuwofepex.weebly.com/uploads/1/3/2/7/132740654/rewasuwapuja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sazixipame/earning_a_promotion_is_made_easier_if_you_know_the.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb67f13e-46c9-4fcf-8310-891517ccbf33/34842626255.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d2f04e0-9c94-4b9c-8eee-0cf186e33766/ruritan_club_clarksville_va.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03f128a4-20ba-49e0-a70c-ef9bcaf11259/waxebupinuso.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/cuyahoga_county_recorder_search.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60f3624f-b2d2-4c58-832b-a2d81461438b/fallrim_tools_resaver.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/16238276504.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bb92f0a-55a1-4ab0-938c-e5175cd70658/sunrider_mask_of_arcadius_upgrade_gu.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/banned_books_challenging_our_freedom_to_read.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e044f524-956c-41db-8eb6-0ccc4f02b7f8/kegevebowidamigodivisen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dafc9dba-600c-47c2-8287-335fca1f7231/barnett_4x32_crossbow_scope_instructions.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 6

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF1A 4996 bytes
SHA-256: 12561bfa402e179407e0f00f24cbf1dddeaa36761a179e66e0e62fbb895694e3
font_01_sfnt_off0000e02a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE02A 10296 bytes
SHA-256: a45a7ff9ab2e0e9382d8890d91c067485a0bbcf097c9ee96c5d00e8f0592f310

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