Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc4a832625f00fc5…

MALICIOUS

PDF

53.6 KB Created: 2020-09-30 01:58:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0e24a86e462346aa4dd274b8406a5a45 SHA-1: a0811bec62d4292e84f7dda74f04855f3997cb45 SHA-256: bc4a832625f00fc5cb2fcafec3f6a1fa2a655c8975e120ec308bbf70c7324340
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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.
  • 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://cctraff.ru/strik?keyword=paradise+lost+summary+pdf+download In PDF document text
    • http://gifesemus.mohannadgharaibeh.com/uploads/1/3/0/7/130775565/f09d8615c3762.pdfIn PDF document text
    • http://files.perfectcompanionyorkies.com/uploads/1/3/0/7/130775280/5212479.pdfIn PDF document text
    • http://keteponev.rainbeaujos.com/uploads/1/3/2/7/132740805/3798529.pdfIn PDF document text
    • http://files.savanfinancial.com/uploads/1/3/1/4/131437632/4fe68.pdfIn PDF document text
    • http://files.bestcaptured.net/uploads/1/3/1/1/131163976/gatemotenubutilaba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4197/2646/files/corrugated_roofing_sheets_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6037/0339/files/34433088046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/lab_colligative_properties-_data_sheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2068/1369/files/zepobi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a069c4ce-ee57-4ae7-9b24-06256a52bc84/61366396469.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deda4b1f-29e4-406c-bdf5-139e9b1bcf82/xotokilefumobaredotula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5657120c-300f-4a69-9123-268feee510ff/rijumejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0583/6438/files/lidexenolugefajupevema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/25712459560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8436/3416/files/basic_architectural_symbols.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0340/7265/files/random_number_table_definition.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_off00009324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9324 5384 bytes
SHA-256: 5ccdee7b2ad5275dfad31009c12befd6d01c9ec2b2919bcc6a50613485edfa4a
font_01_sfnt_off0000a56f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA56F 10580 bytes
SHA-256: dd520410c02cd44b7d6362da506be344ee0a6c759dcde0284b20e5f47131b565

Open this report in the interactive analyzer, or submit your own file for analysis.