Malicious PDF — malware analysis report

Static analysis result for SHA-256 e709c9f8c39c1bce…

MALICIOUS

PDF

37.7 KB Created: 2020-11-06 20:54:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: f5832c3c026f42d9c4ce972ee8e01652 SHA-1: d493e638921f3913d69552f1ddc6728aa525d728 SHA-256: e709c9f8c39c1bceeca79812c8c0a8ff70885cdacff6708a56965d74c0151e6d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://lozagazol.weebly.com/uploads/1/3/4/2/134266804/c999593c65aeac9.pdf.
  • 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://trafffi.ru/aws?keyword=swarovski+necklaces+ebay PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367944/normal_5f95211dcb77d.pdfIn PDF document text
    • https://lozagazol.weebly.com/uploads/1/3/4/2/134266804/c999593c65aeac9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394073/normal_5fa0a8c798834.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388183/normal_5f96b664ada96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393188/normal_5f9ce70644a95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373768/normal_5fa5299fec3da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389097/normal_5f9f85a615c81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387235/normal_5f97e16eba9dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389354/normal_5f9aeb87a944d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/ielts_reading_recent_actual_tests_vol_1.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/54214962386.pdfIn PDF document text
    • https://sisivepigol.files.wordpress.com/2020/11/gepipodo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d863849a-e119-44f5-a2a0-da926ab4fdb1/dedavasafegi.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_off0000547d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x547D 5356 bytes
SHA-256: 8e584d780f8c5420c5f77c963939b16810685046adbe600e51a8b8d3c574e5c0
font_01_sfnt_off000066e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E2 10452 bytes
SHA-256: a5df23a1cb4cd0210648383167ad436e4c3b5e93a242a9cb191e3b5b4797d50c