Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdfc1ca9569faa6a…

MALICIOUS

PDF

32.3 KB Created: 2020-10-30 15:30:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 7e2f03dc856151766c20c37d0ba5866a SHA-1: 19c17eff81b4398dec714d4ae8d253de1521b7f6 SHA-256: fdfc1ca9569faa6afade5d222edc83a38ffddac732dfae9eac2e4918345549c8
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.com/pify?keyword=what+are+the+elements+of+theater In PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/dusexuzemezej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378607/normal_5f90f0dd3b9ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381738/normal_5f8fd9ff6ef85.pdfIn PDF document text
    • https://kekerisasil.weebly.com/uploads/1/3/0/7/130775365/tozaxaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373241/normal_5f97ae12895e2.pdfIn PDF document text
    • https://xelenupexom.weebly.com/uploads/1/3/4/4/134480667/073a2539eb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375885/normal_5f92dcffdd87b.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/9526788.pdfIn PDF document text
    • https://dowikonusinewe.weebly.com/uploads/1/3/4/3/134374018/2732816.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000469f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000469f.bin)
    • https://s3.amazonaws.com/nonabafat/ffxiv_loft_glitch_not_working.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8555/3059/files/40075977755.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/74914887752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9064/7471/files/81992039611.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/25613105499.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/pdf_to_word_converter_for_macbook_pro.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/rogodu.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_off0000469f.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000469f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x469F 5020 bytes
SHA-256: 810134fcba3ba1a23cb2c5b19115198ddb66a5a79adc9b473ead13def7765d7e
font_01_sfnt_off0000578f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x578F 8600 bytes
SHA-256: e386bac398a29d39258a529258f1a1d0bc6cb990b9812e383a27ede607b810dd