Malicious PDF — malware analysis report

Static analysis result for SHA-256 42105c3ede0bf682…

MALICIOUS

PDF

80.1 KB Created: 2021-03-14 00:35:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d569c8b4404d39a5b4624786fc9693fa SHA-1: ceb015919f7be6765fbcacf22cef86a5ec6eb6e3 SHA-256: 42105c3ede0bf6827fc9233d7f49fea7468a71fdc70d9461757090f46f7a9df5
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs, with one specifically identified as a lure for "trading strategies pdf download". The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of external URIs and a link farm heuristic further supports a malicious campaign.

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 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.
  • 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://golowaki.ru/strik?utm_term=151+trading+strategies+pdf+download PDF link annotation
    • http://watogoda.mypressonline.com/80835863914.pdfIn PDF document text
    • http://auto-fishing-rods1.club/analog_lab_software_freec1mvl.pdfIn PDF document text
    • https://cdn.sqhk.co/toralapiluw/ifcUjJH/capcom_home_arcade_console_hack.pdfIn PDF document text
    • http://zarewubizeno.mywebcommunity.org/fefufulizefujijexabiluniv.pdfIn PDF document text
    • https://wutowenejeboz.weebly.com/uploads/1/3/4/5/134599911/477f080a7d47b8c.pdfIn PDF document text
    • http://afracheat7.xyz/lipokudavumixeziwurimelak9wi6w.pdfIn PDF document text
    • http://pinopizo.sportsontheweb.net/jozisanirefipurolis.pdfIn PDF document text
    • http://biggymstoe.com/77670282438vvjw8.pdfIn PDF document text
    • http://awpmode.com/los_7_habitos_de_la_gente_altamente_efectiva_ultima_edicion2qw2s.pdfIn PDF document text
    • https://guvatezip.weebly.com/uploads/1/3/0/7/130776756/6934.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/OYgdPib/82987665224.pdfIn PDF document text
    • http://fosipuzo.mypressonline.com/pidumigibewanudega.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/b242a14b-8be8-47bd-bb66-62809127c51f/69668314223.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a768fe0b-672b-450e-acf5-8b71b6e945e2/15824308091.pdfIn PDF document text
    • https://34e223d5-b18a-4f89-96b3-7c58aa965d90.filesusr.com/ugd/440e29_8fbd01a5e27447c28e3dbdd7090f7f58.pdf?index=trueIn PDF document text
    • https://393102e6-89af-4738-8cad-89662dba8dc5.filesusr.com/ugd/33a16d_dd9e30835d844fa481b1a56a58857b55.pdf?index=trueIn PDF document text
    • https://5fdaa9e0-ad6d-443b-8779-beb8e45026dc.filesusr.com/ugd/05301a_5ece1a9a50dd4993985a801063bd3b8f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2be6f1c2-fe0d-42f6-bc24-db93cca47390/vitamix_a3500_black_friday_canada.pdfIn PDF document text
    • https://ad0d0dbb-669b-46a9-85df-79487014a0f3.filesusr.com/ugd/00d95d_d6f88d37ce844e0f82f6c98702484aae.pdf?index=trueIn 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_off0000eae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE5 5172 bytes
SHA-256: 6d20b1e442915ea1f1dfeff4cf716c99f42b89e5c19a53e6139c246aefbb1fff
font_01_sfnt_off0000fc9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9C 11488 bytes
SHA-256: 06f0dc3e912c93080758973d37256eab5939fbf910fbdbadf2f2526063df0a1e
font_02_sfnt_off000122fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122FC 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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