Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5536028f4bc2122…

MALICIOUS

PDF

69.1 KB Created: 2020-08-10 08:26:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 98736e6bfc36dd8711d6046a2c76b4d2 SHA-1: a6feb58a3dffb023d8ed3a03fd2d9328cb7534b7 SHA-256: d5536028f4bc2122cab1b2dda3325f6502cb530a67f37f9c02bfebc2f5c60e2d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector at 'https://ttraff.ru/pify?keyword=alphabet+numbers+chart+pdf'. This suggests the document is designed to trick users into visiting malicious sites. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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.ru/pify?keyword=alphabet+numbers+chart+pdf In PDF document text
    • http://files.mikaylabourquephotography.com/uploads/1/3/1/3/131380337/foliwexozuboti_bazozanin_muxukakopo_sezuru.pdfIn PDF document text
    • http://files.heavenlyfreshfarm.com/uploads/1/3/2/6/132681293/84bfea63.pdfIn PDF document text
    • http://files.ccamchurch.org/uploads/1/3/1/4/131410479/tilisedeben.pdfIn PDF document text
    • http://files.globalmusicp.com/uploads/1/3/1/4/131437806/zegeniliritesob.pdfIn PDF document text
    • http://files.oxbowriversnorkeling.com/uploads/1/3/0/7/130739251/bidisu_kuwadapaduju_wajunubu_metiwosa.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/1/0434/4610/8312/files/cement_manufacturing_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7467/4083/files/83218050191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/95043778426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8600/2838/files/ziralexomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/sojijazulizuzadokuraga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7190/5698/files/sizufozofolibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7766/4929/files/70404483498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0754/1401/files/vejajakujisegapumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/wepeturositikivixolu.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000e9f6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE9F6 19300 bytes
SHA-256: deaee9bbab035303903f78f66820634ed744560edfa5db2d5fa3f0872755478d
font_00_sfnt_off000090bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90BB 7032 bytes
SHA-256: 5dae99a47ded29101266e1cc6eadef0543547adcf4f93e1e2a7a537a72b25bbd
font_01_sfnt_off0000a8a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8A2 5524 bytes
SHA-256: bd9e975873dd23926aa7848a302f2d8b8c4a29d2edd04c4d1c1aed430d030e78
font_02_sfnt_off0000bb35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB35 15224 bytes
SHA-256: 27c651fd75dd60b100cf27633058985b808070bca37934af70e0c35913c6dc44