Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a0400b105f8884e…

MALICIOUS

PDF

45.0 KB Created: 2020-08-05 09:17:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee9f5c88c9e408314741779bf9413603 SHA-1: c79f16e0034daa66e52906ff9740894c8401e00b SHA-256: 6a0400b105f8884ebc7a864a2ee2625c61ae1f7d98b0ae5251ce331f6d561256
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains URLs that appear to be part of an SEO link farm designed to lure users with seemingly legitimate content like 'botany notes'. The primary redirector URL is https://ttraff.cc/pify?keyword=botany+notes+class+11+pdf, which is a strong indicator of malicious intent.

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.cc/pify?keyword=botany+notes+class+11+pdf In PDF document text
    • http://files.happy-bandits.com/uploads/1/3/1/4/131454355/nebaxasuvubo_taligituva_vobasaberigar_nivave.pdfIn PDF document text
    • http://fokiluni.jerseygod.com/uploads/1/3/1/4/131408280/kakerobewezosamu.pdfIn PDF document text
    • http://files.jamjarflowers.co.nz/uploads/1/3/2/7/132712407/584db789344.pdfIn PDF document text
    • http://files.ksweducationalconcepts.com/uploads/1/3/0/7/130776220/bivasu-fekowunodibu-sukarema-narogoxegew.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/1/0430/9755/5108/files/waviwegitajudab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/wetifekonutulokidoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4563/2665/files/49765231361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/julelajewapesekazujowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0777/4618/files/six_pack_shortcut_workout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2883/0625/files/41886018327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2351/6323/files/50954132650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/53943858092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/zaxeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/punafaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0644/3176/files/rirodoludaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/jikudavaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4912/3993/files/how_to_add_in_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/89659803755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4877/1488/files/mva_bill_of_sale.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_off00007172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7172 5256 bytes
SHA-256: 3f805d08207938e01fc9b581c3d2fc4cb17e894b0f683b100ea550a6dbfb10f7
font_01_sfnt_off0000837d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x837D 10332 bytes
SHA-256: 676580d75cd569c9de80f687309da5c48b4ed2ae496344fc800d532461afebb3