Malicious PDF — malware analysis report

Static analysis result for SHA-256 14428ae27dc96587…

MALICIOUS

PDF

42.5 KB Created: 2020-10-09 00:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f010f00ab72e1eefbf0e96e70667c4f1 SHA-1: 2f54fea45a76180696fc3896d9678e74486f767a SHA-256: 14428ae27dc96587b96efdc4f33515d769a96585c0a691092946ac4cf4ba58ec
142 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.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://ggtraff.ru/strik?keyword=auchi+polytechnic+form+amount In PDF document text
    • http://files.theharbourcc.ca/uploads/1/3/1/4/131453193/3627870.pdfIn PDF document text
    • http://files.hottopicstalkradio.com/uploads/1/3/1/3/131380636/molanujasukabeb.pdfIn PDF document text
    • http://files.kcbakes.com/uploads/1/3/0/8/130813528/gatujadutani-dorodexafikun.pdfIn PDF document text
    • https://site-1036692.mozfiles.com/files/1036692/jagimutijuzedi.pdfIn PDF document text
    • https://site-1039563.mozfiles.com/files/1039563/15242140941.pdfIn PDF document text
    • https://site-1037037.mozfiles.com/files/1037037/21610225808.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/1/0484/1485/1229/files/pokemon_sun_and_moon_nerfs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6155/1519/files/law_legislation_and_liberty_epub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9789/3280/files/toonami_dragon_ball_super_episodes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9980/7651/files/78272210252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8885/5718/files/meveremejuguwera.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005deb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEB 5168 bytes
SHA-256: 89cce6cc822fdfb27c713a05b30b67460a4d3fc6c404e3736284ea19cafe5724
font_01_sfnt_off00006f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5D 2116 bytes
SHA-256: 8db65adc699bed2ed4e99b174e414cace916d9ae25f4e5597e3d94de4d1667c8
font_02_sfnt_off00007905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7905 10660 bytes
SHA-256: 35674292c6e46720aa759cfc490853a9bfe606fab196fe8ef76a2e2374d37e39

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