Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc2d751568b50292…

MALICIOUS

PDF

47.3 KB Created: 2020-10-23 22:34:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 55d254816aeb2f679b408be16c765225 SHA-1: e8d3f87be293e8126256a52a3a887df2131042b1 SHA-256: fc2d751568b50292d415c269ac4066d1ee32801a2892efebaa89d70b0c4bcdb9
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://ttraff.me/pify?keyword=descomponer+pdf+paginas+sueltas+online In PDF document text
    • https://rovumixonisi.weebly.com/uploads/1/3/4/0/134012407/565ab671edbbf.pdfIn PDF document text
    • https://kusebedanosude.weebly.com/uploads/1/3/1/1/131163667/3297630.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/vakobotol-suvuw-rasujomuguguk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368503/normal_5f8966a8286c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368750/normal_5f8911d4d925e.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://cdn.shopify.com/s/files/1/0268/7723/1278/files/willard_beach_dog_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4012/files/bexegenedebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0300/5086/files/25357003667.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6859303c-e8ee-4717-af10-8e6d43839951/62144728670.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99713c16-03c5-47f8-a21c-35eb4d2cd015/nordstrom_employee_rules.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3e2d07a-4716-4113-bbf3-982ded6a0348/financial_statement_analysis_and_sec.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/117d27a6-4337-41c9-973b-e4ca2446d862/lixuwalo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c2cb707-8424-4c71-a0ab-d810d5967fe5/lolefoxunikiwejivak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29802bd4-c37a-42db-93c3-eb61d0056000/sulaxuwem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec4589c3-e94a-4d34-8c8d-d91d74cd26ac/john_deere_145_plow_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/914d02ff-1435-4825-a46c-ff8670f8151e/65847974090.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_off0000693d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x693D 5356 bytes
SHA-256: 297da05f666767ed4c87ab39381010b7cbf8be57399f501a808d90d57fb6ff02
font_01_sfnt_off00007b54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B54 11208 bytes
SHA-256: cadfa311b6039c18e573905095697b0ccb71d2bd31f65216dac098d0aa85e335
font_02_sfnt_off0000a009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA009 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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