Malicious PDF — malware analysis report

Static analysis result for SHA-256 50eb982598749ecc…

MALICIOUS

PDF

80.9 KB Created: 2021-03-17 02:01:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: e8d30d6ee60ad3e7087840d0fcd94889 SHA-1: b5000ec38cdc4870ef232329df0028a348d68745 SHA-256: 50eb982598749ecc658351d0eed77ca9e859090c2102d59c63efbae66d875ac7
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or phishing operation. The primary malicious URL identified is https://mezovuduw.ru/123. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious intent, likely to redirect users to harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • 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.
  • 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://mezovuduw.ru/123?utm_term=canyon+lake+ca+fishing+report+2018 PDF link annotation
    • https://nezogifoxo.weebly.com/uploads/1/3/1/6/131637357/d85b6fbb18e4599.pdfIn PDF document text
    • https://cdn.sqhk.co/sojuzafu/jbuigjf/ringtone_song_lyrics_download.pdfIn PDF document text
    • https://poginatiru.weebly.com/uploads/1/3/0/8/130874277/bf4344329cb56.pdfIn PDF document text
    • https://cdn.sqhk.co/retuwami/Vigjhjf/zufavavukunopexiwudipuz.pdfIn PDF document text
    • https://cdn.sqhk.co/roweziwamu/iiM52hb/43165585478.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/jjjdhmx/vamisul.pdfIn PDF document text
    • https://cdn.sqhk.co/dilereku/Xjjheja/mokakojivemubomamofotokoz.pdfIn PDF document text
    • http://fagumawegoleleb.mypressonline.com/how_to_read_first_alert_carbon_monoxide_detector.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/arabalar_be_kurua.pdfIn PDF document text
    • https://cdn.sqhk.co/nugizape/ggC2jgk/fitavikodivibowe.pdfIn PDF document text
    • https://cdn.sqhk.co/wolanojijen/hidghja/nfl_scores_week_11_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/lokuwanij/fTggexH/5414511191.pdfIn PDF document text
    • https://cdn.sqhk.co/soxemudu/gf44qjd/roblox_games_that_cost_5_robux.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/de7a2ff6-6ad6-48ff-8b21-c9de4e04d4f2/how_many_miles_does_a_honda_rebel_250_last.pdfIn PDF document text
    • https://77a80da1-97a3-4b40-ba11-54c6d232eb66.filesusr.com/ugd/39a0fd_850108c36ee74094b4f2a74abb22ee13.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/59265bc8-7631-4bb3-85e5-305af9848e72/101_bus_san_francisco_to_petaluma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f783c80-6ff3-4d09-9d99-625c6e0d8080/rebadabudexada.pdfIn PDF document text
    • http://zitadufafasid.onlinewebshop.net/states_of_matter_experiments.pdfIn PDF document text
    • http://zudupaxub.myartsonline.com/taco_bell_nutrition_soft_taco_supreme.pdfIn PDF document text
    • https://3e1d1bad-f645-4ebd-ac75-469e7ff7c972.filesusr.com/ugd/e745be_55ac0ed2e5a34888afa62df9e27e6590.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c08a083-91db-42b2-8721-a57388f7a730/how_much_do_it_cost_to_spay_a_rabbit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/763b29b6-b3c2-4271-8da0-068ff1b9e5e1/ar_15_pistol_sling.pdfIn PDF document text
    • https://ddb1515c-011f-4d6c-9a6c-b305a2039a85.filesusr.com/ugd/477ac5_57a12106a44e49db9f6d1ff727bc97c1.pdf?index=trueIn PDF document text
    • https://efa91360-7c21-416c-9d60-3189e0beb381.filesusr.com/ugd/42ffc7_001c3fbf1e52493e94d8fdd7123008d5.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_off0000ecac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECAC 5772 bytes
SHA-256: a386660e95d9c637239a7085e1466ef96cf207b3b664935d1489a70809bbcfaf
font_01_sfnt_off0001005d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1005D 10972 bytes
SHA-256: 22b05e9cac13dbdc7777ccd4cbd0650dd983202a242d8fea8166b6ca01901896
font_02_sfnt_off000125ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125EC 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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