Malicious PDF — malware analysis report

Static analysis result for SHA-256 9723fa6c8948294c…

MALICIOUS

PDF

51.8 KB Created: 2020-10-07 10:55:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 09421a364eb6d063561fa20eae646c8d SHA-1: 5cddcf391b6ae131c1688e0aed9b5a808fc903a2 SHA-256: 9723fa6c8948294c8ca9feeec597c302a1da9cc05f1f304888c98d5cbf3d01d8
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://gettraff.ru/pify?keyword=lethal+white+pdf+bahasa+indonesia In PDF document text
    • http://files.intergenerationalchange.org/uploads/1/3/2/7/132740277/8305729.pdfIn PDF document text
    • http://files.ikargb.co.uk/uploads/1/3/1/4/131409170/c416f2d8c877.pdfIn PDF document text
    • http://files.idahocivilwarvolunteers.org/uploads/1/3/0/8/130814588/tomopipapabu_xapawires_nemixesubexixu.pdfIn PDF document text
    • http://files.annefrank-projekt.ch/uploads/1/3/2/8/132815968/gitiwefubid.pdfIn PDF document text
    • http://files.thesilkfamilyproject.com/uploads/1/3/1/4/131437740/livig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/794c7723-f14a-4a82-9b2c-7eea37425b5b/wamozidapelojorit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4e56077-7d9d-42ed-9e68-d44c37800e41/xigadaxifuje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/490480eb-ef34-4098-9d30-ac285105f71f/51781761238.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a240f621-bfc8-4260-8676-9f0aa071c849/buzudiwuvuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b70fc8ae-fd31-4946-a31d-383eaf4b0c0e/7770300405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4522/2557/files/r.m._drake_beautiful_chaos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6113/2968/files/manga_lovers_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6246/8516/files/84293273041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9821/9420/files/boulder_post_office_jobs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0642/6266/files/garmin_gxm_51_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4949/2384/files/trixie_pet_products_cat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0228/1123/files/lidanagerabuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9167/9639/files/maxire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/7382/4678/files/mesa_arts_center_music_events.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/gujevotis.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_off00008a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8D 5204 bytes
SHA-256: 95941b6f4f511315cfeb9e99e840e3e902c342c104f2410cf180da2b3c619672
font_01_sfnt_off00009c57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C57 11072 bytes
SHA-256: 73a2c430cef8486dcdf014805df45229b5cea9121874af49f2b8fdabe996f7a2

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