Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff09a30bbe6bebf4…

MALICIOUS

PDF

38.9 KB Created: 2020-10-30 20:15:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: ab30e7b85c2db454a8e28182b6100c71 SHA-1: 628db7964c34263dfebeeaff1e05e19e0e5bc0b6 SHA-256: ff09a30bbe6bebf4135f6883f97503a99c95c6b304df48b667b1855a00ea19d5
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/aws?keyword=peter+lynch+pdf+indir In PDF document text
    • https://tenabawik.weebly.com/uploads/1/3/2/7/132710661/6603251.pdfIn PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/nowuribinajefojavot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369784/normal_5f8d673c743b9.pdfIn PDF document text
    • https://bizitodavil.weebly.com/uploads/1/3/4/3/134321392/6418828.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/malapetoxutiwasanag.pdfIn PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/kadibir.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/3a6af17.pdfIn PDF document text
    • https://piwuwati.weebly.com/uploads/1/3/4/4/134404243/tamozobadifogidifawe.pdfIn PDF document text
    • https://sovuzozasofebod.weebly.com/uploads/1/3/4/3/134343281/feleba.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005b4a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005b4a.bin)
    • https://s3.amazonaws.com/warapagefasovi/6131325771.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/verbal_and_non_verbal_communication.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/xabulosibaligevamuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78a1a92f-0d4c-49af-a66e-fa28390bb883/wekadukejoregelela.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/57264204512.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f0356f6-ab0a-4b56-a016-8867bf51df3e/xipiralidegavubupelukaw.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/80292736399.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 extracted file (font_00_sfnt_off00005b4a.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B4A 4960 bytes
SHA-256: ac03eaa3465ead6a6fc82c9bb1f62590f745f74806c4c5a37b3c6e647e93f81d
font_01_sfnt_off00006c33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C33 10192 bytes
SHA-256: 7420c94cab0b921580370b0aee639ca0a69eb85d8d994df1b8c4188cbecb3e79