Malicious PDF — malware analysis report

Static analysis result for SHA-256 5267abbb9d6e6fac…

MALICIOUS

PDF

66.6 KB Created: 2021-06-10 21:49:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: fdfce15d1eb3fb57e4e1f7709ce54531 SHA-1: 69c4e14a5802aaf3383982a5a4751265cacd8c57 SHA-256: 5267abbb9d6e6facde564580bda204aa2f75331fe796ee3098d716b09c7b2e4b
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on disposable domains, indicating a link farm designed to direct users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous URLs point towards an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9676

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.
  • 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
  • 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://medvor.ru/pbw?utm_term=download+7+rings+song PDF link annotation
    • https://wipasokewuwil.weebly.com/uploads/1/3/4/0/134000036/fejiku-wefuteworarefi-weluki.pdfIn PDF document text
    • https://samugunu.weebly.com/uploads/1/3/4/7/134701516/kopuseginomeni-rubojujev.pdfIn PDF document text
    • https://xibuderopugef.weebly.com/uploads/1/3/4/0/134042602/zafutij-retuworexutas-kudunam-jadunin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tejudafo.pbworks.com/w/file/fetch/144820458/fewuxuji.pdfIn PDF document text
    • http://zilebunod.pbworks.com/f/twilight_full_movie_in_hindi_part_1_download_hd.pdfIn PDF document text
    • http://ruxafonan.pbworks.com/f/how_to_make_in_little_alchemy_2_cheat_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0ec8a09-6a86-4105-8c23-5bd6ea3e7e95/what_are_the_subjects_for_agriculture.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75127c35-53fe-480f-bea1-b86567ab76d2/rifub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4149091c-739d-4d15-a211-a3e13150b409/is_glasses_usa_trustworthy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f299f76d-95af-4901-90ba-df2725d41de6/baduzilapiwu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aa2b788-3312-459d-8864-147cbcebf228/tuxakadevadobito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4690aa98-3936-4d1e-b6c1-fde03b43bda5/plantronics_backbeat_go_410_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b4d7cf8-2c57-495f-83d5-a26663ce97bd/32577650952.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4cc3320-e111-4337-bde1-c83ff9990637/nejatalepijubusa.pdfIn PDF document text
    • http://fixunomavow.pbworks.com/w/file/fetch/144475410/how_to_connect_nest_hello_doorbell_to_google_nest_hub.pdfIn PDF document text
    • http://tosuvop.pbworks.com/f/electrolysis_of_dilute_sulfuric_acid_using_platinum_electrodes.pdfIn PDF document text
    • http://jajisaparev.pbworks.com/w/file/fetch/144412797/logic_pro_x_trial_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2141f1af-4261-4617-88bb-33d078a40d3a/what_is_exploratory_research_with_example.pdfIn PDF document text
    • http://xumamiz.pbworks.com/f/what_are_the_8_types_of_adjectives.pdfIn PDF document text
    • http://dewepun.pbworks.com/w/file/fetch/144925728/92328061368.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e32c6a04-b225-4c96-be69-fa146e2f8e2e/toro_power_max_826_oe_oil_change.pdfIn PDF document text
    • http://zubipuwaf.pbworks.com/f/malayalam_full_movies_free_download_utorrent_2019.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eeda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDA 4756 bytes
SHA-256: 660cff4f16a1054664c2971940645c2e9df925c6455e33bd6257affe58b57ae9

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