Malicious PDF — malware analysis report

Static analysis result for SHA-256 c97bfee0bd09afc4…

MALICIOUS

PDF

42.0 KB Created: 2020-08-11 10:27:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15c2cca5799deb5db66921fbaf60fbff SHA-1: bda203bf33eaa2612f7775b523bc95c3bbb5d595 SHA-256: c97bfee0bd09afc4201ec4ad12a38fc498c0d6579a5b6515cd7e83d22797a4b4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious. The primary malicious IOC is the redirector URL, which is designed to lead users to further malicious content.

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/wb?keyword=whirlpool%20combo%20washer%20dryer%20manual In PDF document text
    • http://files.irishwolfhoundsvictoria.com/uploads/1/3/2/6/132696233/turosaxosikoxuxax.pdfIn PDF document text
    • http://peluvozum.jackpotvapr.com/uploads/1/3/2/8/132814930/wekikigedufiv.pdfIn PDF document text
    • http://files.adorndanceandart.com/uploads/1/3/1/8/131856624/fimav-lavirazek.pdfIn PDF document text
    • http://files.wakefieldmeadows.org/uploads/1/3/1/3/131381612/lonipewime_xazezuti_lisepunalaxu_kibabuzobudaxof.pdfIn PDF document text
    • http://ronij.loveharmonyrecords.com/uploads/1/3/0/8/130874566/7982092.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/1/0437/8358/5953/files/levomawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9160/8227/files/16157886489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9567/8357/files/72904400989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0720/3739/files/promissory_note_in_telugu_format_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3256/8220/files/veni_creator_spiritus_partitura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2072/1055/files/7549481393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6038/8252/files/vufazipowapufodoxinazotug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/dauntless_fractal_eyetooth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0710/6462/files/fuwikevazezur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3038/4537/files/michael_jackson_type_song_onlineaudio-_converter._com.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4392/9762/files/xudep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6354/1917/files/53939192413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8436/3416/files/mcas_question_search.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0459/6122/files/how_to_make_pumpkin_pie_minecraft.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
🗂 Part of campaign: jackpotvapr.com 3 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6593 5660 bytes
SHA-256: 0ec91ea951a811f8777a283b420b4aa111cf31d8eb2f0746056248f2b32996cd
font_01_sfnt_off000078b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78B6 10004 bytes
SHA-256: 47e7ad7c6acd2e89294e99f564e00c73a5c680f11d43634949c4f82747a32421