Malicious PDF — malware analysis report

Static analysis result for SHA-256 632e8ef62f74c4b0…

MALICIOUS

PDF

47.7 KB Created: 2020-08-24 03:29:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e2e871d2a2d905292c4868d04c957f6 SHA-1: 7377d3b2dede733282a75ef5a5733da84886489c SHA-256: 632e8ef62f74c4b0bbb0213ff0000ebb2b2f40aa12da5a8fcdb4c9b0ac2202f8
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The primary redirector URL is 'https://ttraff.ru/pify?keyword=system+functional+requirements+document+template', which is presented as a document template download. The ML classifier strongly indicates maliciousness. No scripts were extracted, but the document body and heuristics point to a phishing lure.

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=system+functional+requirements+document+template In PDF document text
    • http://sefosire.commonharvestcsa.com/uploads/1/3/0/7/130740563/0841419ef0f.pdfIn PDF document text
    • http://pokazok.benmarshallwriter.com/uploads/1/3/1/8/131856772/lovebizo_doxokazisubile_putofezosar.pdfIn PDF document text
    • http://ruzade.farmbuddiesonline.com/uploads/1/3/1/3/131383483/sukovenujunijegavi.pdfIn PDF document text
    • http://tobuli.eclectic-kids.com/uploads/1/3/0/7/130775795/kakuzifobi.pdfIn PDF document text
    • http://files.tncommunitycorrections.org/uploads/1/3/1/0/131069910/5810a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4117/7252/files/naxop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1481/4882/files/calendario_2018_para_imprimir_por_meses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8499/5991/files/nakaxajurowidab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0115/9585/files/4956816710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1037/4307/files/43437898721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1310/4035/files/mopisonenukuxexulavumet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/58915618362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1842/3194/files/administrao_financeira_lawrence_gitman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1263/6315/files/16528280113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6388/3429/files/xoroxarok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7077/4679/files/xokuwaterurabojojugugekir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75320426607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5780/6488/files/zazekimaw.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1B 5516 bytes
SHA-256: 10e82cd5323437a7f8be911f928476e94f6d2b66270dba0fcfc4e6ac506a3072
font_01_sfnt_off000071b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B7 16136 bytes
SHA-256: 0c45747b5256a47421367d48ebb64f01cb9fea35c9babaa1cac7d1e5c105ce8c
font_02_sfnt_off0000a372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA372 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3