Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6f3ee5295139dd5…

MALICIOUS

PDF

40.2 KB Created: 2020-08-25 06:25:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6e068f95a33d8a15913d59ea9613e8bb SHA-1: 9b5ce4aa299cef54224d833919572d350b574336 SHA-256: d6f3ee5295139dd52f2dd78944daea1a732f4afb55b5cea15ef5af41e8ac0ada
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.ru/pify?keyword=create+checklist+template+excel In PDF document text
    • http://files.rivertonmiddleschool.com/uploads/1/3/1/4/131438211/4363375.pdfIn PDF document text
    • http://files.seizemymoments.com/uploads/1/3/0/7/130739906/xedupoxap.pdfIn PDF document text
    • http://romupixo.conciergepainrelief.com/uploads/1/3/1/4/131406515/zomojunurumivo-rigonoliniwar-vinalumog-nesuzevopodirug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4900/files/20475048175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8945/1425/files/amendments_test_1-_27.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2567/0037/files/7428071109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/java_code_for_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6879/2732/files/80276665984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2490/6400/files/89579016762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/anti_money_laundering_act_pakistan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7660/7390/files/xidudabixeferedum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/20164660529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/84508661640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6108/4322/files/59289421828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3980/7893/files/boundary_element_method.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_off000060aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AA 5208 bytes
SHA-256: 080c8e9291903039aa6a4900678a8cdba2c96706369628335bd1bd9d308b3abd
font_01_sfnt_off00007236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7236 9892 bytes
SHA-256: 63051c7dd821730bc4bd4a0148973a834d0d90cadaa8abca52256c15af3add8b

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