Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc353f1facfb6c9…

MALICIOUS

PDF

40.5 KB Created: 2020-10-02 01:34:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: e3f4e688c6f6d63b03c0a032d22c3450 SHA-1: 6f7db2b446ce4ce98d3df82426fe348e409b51ef SHA-256: bcc353f1facfb6c9e948a9ec67b8c8e3c9a87d324f22fedfd7808c6140d96807
184 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.
  • 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.
  • 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=20+poemas+neruda+pdf In PDF document text
    • http://puzege.phisigmapidavis.com/uploads/1/3/1/3/131379730/sujipijelenewurex.pdfIn PDF document text
    • http://files.daniellelbeattymoodyphd.org/uploads/1/3/0/8/130815277/5483628.pdfIn PDF document text
    • http://files.sweetcelebrationsllc.com/uploads/1/3/0/7/130776433/c69d1.pdfIn PDF document text
    • http://files.triplecrownvolleyball.com/uploads/1/3/0/7/130776350/birazaviwexa_lejesid.pdfIn PDF document text
    • http://files.kallipolitan.com/uploads/1/3/0/7/130740118/kudomuvibisa-gumisijafifemok.pdfIn PDF document text
    • http://nurovos.southwickchurch.com/uploads/1/3/0/9/130969260/tufisu.pdfIn PDF document text
    • http://luruxepa.hubelfarms.com/uploads/1/3/0/7/130739783/71cce6.pdfIn PDF document text
    • http://files.sefoa.net/uploads/1/3/1/8/131871817/kanujidofu_virufaxegiwis.pdfIn PDF document text
    • http://bulasir.strawberryblondebakery.com/uploads/1/3/1/8/131856584/892f03c.pdfIn PDF document text
    • http://files.crispusattucksalumnilettermen.com/uploads/1/3/1/4/131406563/c052f3fda.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/1/0494/1696/2215/files/art__fear_observations_on_the_perils.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8505/2566/files/no_remorse_band_albums.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/glu_hacker_apk_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec1d5e9c-22a6-476b-87a8-f6d9b777dff5/fijuwepupagol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66a4ffbc-1a22-44aa-8259-18427d15a313/41823457013.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9cc7584-aa96-4cca-b693-78831fda7700/40043046437.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95fa1b91-8218-42c7-a402-60d9ec87da15/16911145252.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6107 5336 bytes
SHA-256: cfc7c7649f322d61e737df93682416a4823b176482df93ecb4c2e4a6629f503c
font_01_sfnt_off00007311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7311 10052 bytes
SHA-256: d08e33513ebd30a774681d002025999de34676497bf1d4b42b537fb583611e84

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