Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbfe92acb623a391…

MALICIOUS

PDF

59.9 KB Created: 2020-07-30 09:54:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6b3b635391b495cb9f719f89fa7dbf7 SHA-1: a57d16ee31341e0a7949b46af31cb5105d21f160 SHA-256: fbfe92acb623a391c69cf29722ab1343c81a9a3ca7198bfc4e9429d5c054d2b2
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of these links, 'https://ttraff.ru/pify?keyword=velocity+diagram+of+centrifugal+pump+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to technical documentation, likely intended to trick users into clicking the malicious links.

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=velocity+diagram+of+centrifugal+pump+pdf In PDF document text
    • http://files.rmwle.org/uploads/1/3/1/3/131384568/vugujifasovokotu.pdfIn PDF document text
    • http://files.rfp.ie/uploads/1/3/2/7/132740501/919938.pdfIn PDF document text
    • http://files.guardiandental.ca/uploads/1/3/0/9/130969389/fibidune-pifax-laboze-bileruwon.pdfIn PDF document text
    • http://files.perfecthealthpractice.com/uploads/1/3/0/8/130873718/9d1a7c6.pdfIn PDF document text
    • http://files.englishwithsam.com/uploads/1/3/1/6/131606502/054e15a69.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/1/0430/3034/7938/files/fuxibobem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0279/7986/files/lofavanijopowijudosad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/43585109211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6011/8175/files/74434504188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/55565156471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8120/2854/files/53551225586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84574839703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0465/6790/files/medipegevejekanufuxarura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6694/9799/files/pamejoxuxumixupode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69892687871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8562/6520/files/7504055038.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 3

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_off0000ac5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC5A 5244 bytes
SHA-256: e2872a8af2f598ca475b64c92888c7a00826345465a0b79e87dd691ff2b0772a
font_01_sfnt_off0000be1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE1E 10484 bytes
SHA-256: eeee687c3b095dc40b95e48c066fab7c05d360ef93478696ddefe6baf4a611e2

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