Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee1752bca2ff100…

MALICIOUS

PDF

53.4 KB Created: 2020-11-06 00:46:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 411d5fd0d346d96a70a5721ae2c74565 SHA-1: 078375f76841b81ccb7c95023d7f699bad76f91b SHA-256: 7ee1752bca2ff100bafc14c46de34ebf73007dcfe51d83c3ca0d80ac358f4a28
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://traffking.ru/aws?keyword=barista+training+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4402722/normal_5fa3e2002acff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374859/normal_5f98c53a9b06a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366622/normal_5f875e378b0f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416500/normal_5f979cde1dc0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371010/normal_5f8a28fd38868.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410018/normal_5f993ef7c2f28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367940/normal_5f90ffc6a2da8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409604/normal_5f9b89b17df02.pdfIn PDF document text
    • https://ralokokotozupar.weebly.com/uploads/1/3/4/3/134340958/603eb4e8c7613f.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/bizamesuwepe/twilight_life_and_death_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/dj_mixer_app_download_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/75854710066.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_off00009413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9413 5056 bytes
SHA-256: 1e5ffd7fbbe08718ef132562d0286e134b4401eacdc8dbb5f599a530e1e3f86e
font_01_sfnt_off0000a52f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA52F 10560 bytes
SHA-256: f2676331e58c88a56a4ab6c342380f901a91005dc2d2d53c11c4e3c43b98daa8