Malicious PDF — malware analysis report

Static analysis result for SHA-256 65f023d6857ace3b…

MALICIOUS

PDF

49.7 KB Created: 2020-09-09 14:32:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: caef2dc78e59d2e890a8ada357a3f7c0 SHA-1: 72dc07b65e236760c8e143d335a0cb70e418346b SHA-256: 65f023d6857ace3bde5673aa92e437b96b6f48f7bacf9fc525c6492c14fa5de3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to potentially malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to attract users searching for web portal templates. This suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.link/pify?keyword=web+portal+templates+bootstrap In PDF document text
    • http://files.building103.org/uploads/1/3/2/6/132696016/5a82844e437a7a.pdfIn PDF document text
    • http://puwovadik.healdsburgflowers.com/uploads/1/3/2/6/132681352/4fc49e590b30e.pdfIn PDF document text
    • http://files.twistedblendz.com/uploads/1/3/0/7/130775959/4434544.pdfIn PDF document text
    • http://files.gainstageproductions.com/uploads/1/3/0/8/130873922/7569776.pdfIn PDF document text
    • http://pedase.newahecevents.org/uploads/1/3/2/6/132680835/e3d97b3.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/1/0464/6934/9534/files/bestie_camera_pro_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5335/8999/files/rrb_aptitude_test_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/in_him_alone_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1619/9064/files/fuwopulodukufexadabow.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/493135_796e93823bf84206bc26b31eb4a2e702.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5befcb_534c0f9b1f214b1b8dcc21f321094b8e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f09a9d_c802666ddbd84eb9b7b66b76d7c452bc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_1cc46e79773e4ca88f972c0e9e8afe63.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/dcc11b_74a7d5d9f97c463dabb4aaccee009abb.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/221eaa_0889e3dc22464a99be96c0565deeb70f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/61b8bf_2a1fdd7950c4456ca1b6a297c27ddaa0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_74fc5a1685cb45c594a89ea55cf96e93.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_off000085a0.bin
d0ae14e791d9a8fbdca3a0bac4f989ff4b714d10f2d1e8cb8c7a773a52fefb1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85A0 5116 bytes
font_01_sfnt_off000096f7.bin
80ee0cac8a13d71fc735a57c012153edd7b6c43de0d5f18d24a744452ecaa7f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96F7 10108 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.