Malicious PDF — malware analysis report

Static analysis result for SHA-256 02bdf91e1f1772de…

MALICIOUS

PDF

49.4 KB Created: 2020-10-05 21:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e8d084cc82694f61376c68acf2f67d82 SHA-1: 2b38cfc96a7a5674cd1ba8605fdba9d9ee0af72a SHA-256: 02bdf91e1f1772de958d8f8df70d89ff72d8fd33d093377124499f75f9283fdd
182 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/strik?keyword=gta+iv+psp+iso+game+download In PDF document text
    • http://files.kidfoodiecolumbus.com/uploads/1/3/0/8/130814935/baxodolipego-vetoxuro-denire.pdfIn PDF document text
    • http://files.sundayomony.com/uploads/1/3/0/7/130775310/bepozumej_gixivuzolipo_resadejowimufas.pdfIn PDF document text
    • http://files.vayavya.in/uploads/1/3/1/6/131637873/8143633.pdfIn PDF document text
    • http://magujojod.westcapitalrealty.com/uploads/1/3/2/7/132741064/b547a.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/c8b12fba-3bc6-4058-bbbb-db63a97e8f85/dodigirubizifem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5ad7b37-d9fa-48e2-a44b-4d37df37de35/sawenujewosetowesaloxorex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e4303bf-6f6f-43f0-ba79-0dadf884a5d2/minexowuji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23e0d1c6-8451-4c2e-b2c1-3bf6b95389be/jamasulokavimabejibibaga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a42ab75c-6eee-411b-814c-a10122418a0f/nigid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7864/2581/files/musisuwewopopewaxitox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5121/9104/files/dotubifotananigutoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1370/4349/files/draw_angles_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ec12fd4-7160-40eb-91c5-2a3cadc28904/9828221040.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/411b928f-8d5e-4eb3-a220-4afb931ec0da/vasapibifupasemajax.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000825f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x825F 5364 bytes
SHA-256: 6a836a0a837728cedb7f91736cd1f84d5643701222fd4aa4b5f849e8cca5bf28
font_01_sfnt_off000094ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94AC 10500 bytes
SHA-256: 76693f9a4d6dffc512539c04a06656d0aec909cc4101543fda7a0e84ef602eeb

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