Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebfb2f02b41402c1…

MALICIOUS

PDF

48.1 KB Created: 2020-09-09 19:46:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e25b9acbef6453db190058356bf11518 SHA-1: d235f5a5d786ffe5fbdb96a804fafd9141764e46 SHA-256: ebfb2f02b41402c16ef5ec2031c109249aa0fd6ee335395cc2a21364a66d40e7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, including a critical redirector link to 'https://ttraff.club/wix?keyword=90x+game+booster+apk+free'. This indicates a social engineering attempt to trick users into visiting malicious sites, likely for malware distribution or phishing. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, and the document body is heavily obfuscated, but the presence of a link farm and a malicious redirector is sufficient evidence.

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.club/wix?keyword=90x+game+booster+apk+free In PDF document text
    • http://files.kearneyworks.org/uploads/1/3/1/0/131070678/4319461.pdfIn PDF document text
    • http://files.ncnats.org/uploads/1/3/1/0/131069887/7645322.pdfIn PDF document text
    • http://files.thepoordammfarmcreations.com/uploads/1/3/1/6/131637570/kapad.pdfIn PDF document text
    • http://guvefap.ndsportschannel.com/uploads/1/3/1/3/131379478/wusogepesifefe-timevijatefa-tilijipozoki-xiwawaxariduki.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/1/0435/2137/6410/files/48086011993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8107/0747/files/celkon_smart_4g_flash_file_v14.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3518/0703/files/gigevopixififa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1330/6530/files/navneet_cursive_writing_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0379/6894/files/nebalovovefagerakaju.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/09273f_ad378552d83d4c48a6b42915c1e11713.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0e9fc2_046d7e78aa3b425999db2e10e7a38753.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a91264_f07311fc0437470bb6c0cd5f3b96c197.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8bbd7_f221ba0dfd574e4dbe357ddf7ac726df.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_0fe6ca848f8b444f8be2538d1539486f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/205ae4_a1aef1005b1d4faaa408bc2dd8bc1464.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/90423f_7a43c549845846c4a3cf0b10bde5379f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/353d00_a1cc53377aa34859b0c1a56bf6d374f4.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC3 5664 bytes
SHA-256: 074dc40d2ba706504070543df84e269f7fc9effec05ad5ed623b1925b259bdd1
font_01_sfnt_off00006feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEB 2140 bytes
SHA-256: a1c68180eae955d710b1f59d89b7b5bb1f22246194deffa7b9c3298859733f9b
font_02_sfnt_off000079c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79C3 10500 bytes
SHA-256: 7d39878a1c4d68e409ed74cb75e3b9a6079c66e414ba353596f4d45f72f520d1
font_03_sfnt_off00009d9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D9F 16168 bytes
SHA-256: bcfecb9fde4b74e4a2b692e15caf305b2988a1cfe4c6386614002e38d35feb86