Malicious PDF — malware analysis report

Static analysis result for SHA-256 11887bb123dbe881…

MALICIOUS

PDF

61.6 KB Created: 2020-08-11 23:07:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 810b4f5781e645b403dde218585dd4a8 SHA-1: f805cab91b7bb61a72363ce463292a55b34fe8d4 SHA-256: 11887bb123dbe8819d265b26f23b3aeb7caec7176d88eb9196721e40db6f5574
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to create an SEO link farm, redirecting users through a malicious domain. The primary malicious redirector URL is https://ttraff.ru/pify?keyword=south+african+coin+catalogue+pdf, which is likely part of a phishing or malware distribution scheme. The ML classifier strongly indicated maliciousness, and the presence of many external links points to a content-generation abuse for malicious purposes.

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=south+african+coin+catalogue+pdf In PDF document text
    • http://files.hairbylola.com/uploads/1/3/1/4/131452836/xepaxejatalaz_busunixabuse_zawufoverenaza_lasemir.pdfIn PDF document text
    • http://sazufap.rsgallardolaw.com/uploads/1/3/1/0/131069839/9569923.pdfIn PDF document text
    • http://files.ea-abc.org/uploads/1/3/1/4/131409463/8757175.pdfIn PDF document text
    • http://jades.bluedahliamakeup.com/uploads/1/3/1/8/131871390/753aab5b.pdfIn PDF document text
    • http://woxokekop.photonomadtours.com/uploads/1/3/1/4/131406749/5503769.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/1/0434/5469/3537/files/robekusopuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/budget_making_process_in_kenya.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/maths_questions_for_class_9_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9150/6840/files/41333592076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9114/8444/files/getidero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4152/9754/files/xezinare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13879903487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7874/6261/files/2815001743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nojigepinipefonumupitos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2063/8632/files/java_draw_graph.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6593/3985/files/82515408469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2565/3160/files/ffxiv_treasure_hunt.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: photonomadtours.com 3 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F8C 5340 bytes
SHA-256: e8555d49d22572b8777aa2cd8472fea290c9a616d3ed6b6d187e17d659864644
font_01_sfnt_off0000a1ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1AB 16188 bytes
SHA-256: 46dea71425199bddd7a6dce2d18f1c1516e080dc631f70f59ae0d1c2871ffbb2
font_02_sfnt_off0000d3c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C6 16172 bytes
SHA-256: 479b9ed2b38c3b2436d467d04f2a5b901543c080f2594dac8580bde17b2d0a1e