Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c711a777a5e7b62…

MALICIOUS

PDF

41.7 KB Created: 2020-08-14 08:44:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 459920c1512ed541dc94a2d86cc9f845 SHA-1: 3d26a1c6e5388b9227e8636be4bfbc3827c2732a SHA-256: 5c711a777a5e7b62e037a693326782d99a5d65986157881ba5ae130ef3b31195
194 Risk Score

Malware Insights

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

The PDF contains numerous links to an SEO redirector, specifically `https://ttraff.ru/pify?keyword=the+seven+value+stream+mapping+tools+pdf`, which is designed to lure users into downloading further malicious content. The document body itself is heavily obfuscated but contains references to the redirector URL and other PDF links, suggesting a link farm or phishing attempt. No scripts were extracted, but the presence of malicious redirector links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

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=the+seven+value+stream+mapping+tools+pdf In PDF document text
    • http://files.apolloartists.net/uploads/1/3/2/6/132681851/3866484.pdfIn PDF document text
    • http://files.katiegracecollins.com/uploads/1/3/0/7/130776276/wudupufube_sididoli_romexugowa_suwuxo.pdfIn PDF document text
    • http://files.ccmein.org/uploads/1/3/1/6/131607075/xusitodizej_benipizabu_bidewolegin_zarela.pdfIn PDF document text
    • http://files.johannaparkhurst.com/uploads/1/3/1/3/131383754/virepez-furedoze.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/1/0433/4908/2264/files/93162202875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3080/6679/files/25557951527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5091/7269/files/wobowurovutosevesawoxukip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/jesasugitav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/96126238850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6900/6236/files/3976328712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7424/3999/files/amulet_book_4_read_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2013/9170/files/best_voice_reader_for_iphone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1555/9573/files/55057168355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9028/0609/files/wulujegezusisuxagibuv.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A6 5464 bytes
SHA-256: 8ef8efc16b8b3bd24ffddbd8227c954cdb7f60ed63fe4b3b9f681caf373da0ba
font_01_sfnt_off00007716.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7716 10268 bytes
SHA-256: faf98557ec85e34368b50af7a022dabe4e5edd44a9ba360ba407ee44dd4ad50d

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