Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d5c51a82f5e886d…

MALICIOUS

PDF

113.1 KB Created: 2020-08-08 11:54:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1da3f5a3b9f2b4a310a2c3e9e91e24b1 SHA-1: 5c3e07f5673c763d52ef0db7059d03247f76b3fc SHA-256: 9d5c51a82f5e886dc984c5bf41f76ca516bd3983db4c192343445e331cf7d2f3
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL. This indicates the primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or phishing.

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.com/pify?keyword=alter+ego+1+plus+guide+pedagogique+pdf In PDF document text
    • http://files.anglemidwest.com/uploads/1/3/1/3/131384113/mimewe.pdfIn PDF document text
    • http://kebuxisak.tucsonactionnetwork.com/uploads/1/3/2/6/132696194/541161.pdfIn PDF document text
    • http://files.newukmusicals.co.uk/uploads/1/3/1/0/131070089/879af657.pdfIn PDF document text
    • http://liriguvun.nuggfit.com/uploads/1/3/1/6/131606490/5638019.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/1/0437/0402/5242/files/atresia_bilier.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7261/7637/files/xomebigosojesixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6238/6079/files/gedavavawimemunadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6135/4404/files/situboburetojakimebizeror.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0742/7238/files/fodozetafazitajurozibep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/46301634361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2418/7555/files/pujemas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4950/8250/files/redamawinax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6241/8846/files/pitubaxapujosilufewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/13200528697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0813/0213/files/doxewufawore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/wivufapumotexoroxeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/puzatanowurutewezar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8092/4837/files/92050231649.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
🗂 Part of campaign: inhistrenches.com 3 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016a2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A2B 5376 bytes
SHA-256: d86217a2d4172c1922e45e9a96218519743540008a2c54f675901b6e7d42938f
font_01_sfnt_off00017c87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C87 10644 bytes
SHA-256: 2e05abdbf3e691b5fa5a031dd452a64f063b766cd6e3cd3c08e62414e3c0dc7e
font_02_sfnt_off0001a0cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A0CF 16284 bytes
SHA-256: 4f66cb4358c5540adef52c5caaed0eabc63d4f7fc3f2586db40fb91b8eddafa3