Malicious PDF — malware analysis report

Static analysis result for SHA-256 004b14a515000888…

MALICIOUS

PDF

43.7 KB Created: 2020-10-28 05:04:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 81d9ef967317304d28f97b88bddfc915 SHA-1: 61dbd3f53a9dc58fa9e101004b1587a6168e5455 SHA-256: 004b14a515000888198b93c93b7f02b1a1260a6b1bd53cb064fe5cd34d7ad141
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.me/123?keyword=macedonia+missionary+baptist+church+miami+fl In PDF document text
    • https://rabugotekinevod.weebly.com/uploads/1/3/1/8/131871666/6b97314b9e13d5.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/monirafulowafix.pdfIn PDF document text
    • https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/kerokopema_gekax.pdfIn PDF document text
    • https://nudopimiga.weebly.com/uploads/1/3/1/0/131070212/264294.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f8892b3661e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387565/normal_5f8d9945e6fe7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369772/normal_5f97fc89004c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382208/normal_5f93e1828b28d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373776/normal_5f8be3e827ef2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366340/normal_5f876552f0f56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401517/normal_5f9260603c66a.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000055c1.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000055c1.bin)
    • https://cdn.shopify.com/s/files/1/0430/6773/6225/files/recreational_dive_planner_instructions_for_use.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2426/8968/files/sipiwarelevonuxija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1937/0659/files/15196641652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/5566/8136/files/picsart_pro_apk_download_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/1547/2805/files/chess_musical_streaming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2275/1643/files/pirukerazexesev.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/basic_biochemistry_books.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/62140246608.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_off000055c1.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off00008bc7.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off00008bc7.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55C1 5644 bytes
SHA-256: 9c3c4eea077f70d5d379937450af6ae250a0bb75b94725be5cc2a8e8d3af6468
font_01_sfnt_off000068c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C1 10384 bytes
SHA-256: 5730f08cbf6687056894a31383e2e1d2b48efcb461021ff849843097ad236e30
font_02_sfnt_off00008bc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC7 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e