Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0fd75674b03f0e1…

MALICIOUS

PDF

78.5 KB Created: 2021-04-08 23:41:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6e5a43aee5c83d381d6e7f06bfc1328f SHA-1: b64ecb90c80f5b6a957d9968a92ecfcf5f7b838c SHA-256: a0fd75674b03f0e136e8d4b19dc5bec50c830ee7da252db11db3a96a92ab0f2b
76 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 heuristic indicating it's a lure for free downloads, directing users to a suspicious URL. The ML classifier strongly flags this PDF as malicious. Although no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/strik?utm_term=zebra+qln320+printing+blank+labels PDF link annotation
    • http://manaluw.iblogger.org/nigukiseselexove.pdfIn PDF document text
    • http://gokojun.scienceontheweb.net/besame_mucho_guitar_sheet_music.pdfIn PDF document text
    • http://bimovixexena.scienceontheweb.net/51938997948.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://s3.amazonaws.com/wajufifenoxuj/atorvastatin_davis_drug_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c0e2096-0210-46cb-b972-ac11e1e0def3/yaesu_ftdx_1200_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/faxidunimose.pdfIn PDF document text
    • http://bikaxubu.rf.gd/fematosabaxisebeba.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/damaketubaxifiduwajar.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/microsoft_windows_server_2016_license_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/bixedaropiweduxudi.pdfIn PDF document text
    • http://fedadomuzeriv.epizy.com/post_gastrectomy_complications.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33f80dfc-3a1b-4678-8623-6352616098b0/casio_pro_trek_wsd_f30_price_in_pakistan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72133f3e-5730-40e9-8b6d-dcb4ffc4937a/66222653332.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2970f066-a973-4225-add1-c6ec172a17f1/can_you_get_microsoft_access_for_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a382f312-f7ad-43d4-b196-b9eacf3e6329/tifodobisatubabuzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc9ed563-20d9-4029-b10e-e8efece2ba20/famous_quotes_diary_of_anne_frank.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE854 5388 bytes
SHA-256: 6cf789dce1069852c3dabe3397eafa1368b9d21ae2235261c0aed5896a066f93
font_01_sfnt_off0000faa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA5 10520 bytes
SHA-256: b88f9c93a44044551b1b4ddee7cd5febbfe07627bea9bc87dc2e293d7e165d21
font_02_sfnt_off00011e91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E91 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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