Malicious PDF — malware analysis report

Static analysis result for SHA-256 725155257d9a3482…

MALICIOUS

PDF

78.2 KB Created: 2021-03-21 08:46:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 23e52bb938f26b17e99ad3717b6f11c5 SHA-1: 8c869c35d350f68deeb07e2d381738e13d1a31f2 SHA-256: 725155257d9a34824be052eb41cb71aa43954a46b51cee9f584c9d360951626a
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 0.9996

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://jottigo.ru/123?utm_term=medication+antidotes+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424632/normal_603926e467794.pdfIn PDF document text
    • https://latapelubatute.weebly.com/uploads/1/3/5/9/135960370/sutujesepu.pdfIn PDF document text
    • https://gimexewevojux.weebly.com/uploads/1/3/4/5/134523505/6174281.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492600/normal_60057ca5bc615.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415754/normal_604ba150bbe4d.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/82b0032e-acd6-4059-a17e-ca8e64049a10/dell_latitude_e6510_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/does_android_9_support_wps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3529eb98-3517-42a4-b884-87c95efd084e/kapogivarogajozegiwoverir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d4f8ce9-8586-43d4-ae1b-6f36aa7f4ccb/19203099719.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/amazon_prime_tree_of_life_bible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5568b208-66a7-48bc-8ead-55954de9792c/bijipalubemixakebilal.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/37844200071.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/62918132974.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/womurevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/992b5973-2e35-4875-bc9f-7dc76a68e368/central_and_peripheral_route_to_persuasion_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/aquilegia_formosa_seeds.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc78ab8b-dd6a-4532-8473-b6c7a062eb7b/xfinity_xr15_remote_control_setup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24c797a1-e18a-44b6-9a28-c1181d709653/12522147072.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/class_9_atoms_and_molecules_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/telugu_calendar_panchangam_2015_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd1265b2-9729-47a8-9ebe-d8a7b3fe81c2/40800776106.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D1 5028 bytes
SHA-256: 82f45d55af8f280054f3be84f0face6fd56f64af62c5ba2862b53916e097cffe
font_01_sfnt_off00010511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10511 11320 bytes
SHA-256: cee0814a95f4928138f9bc1badb208d2f5e09a794449d06149e4b29ba7894fd6

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