Malicious PDF — malware analysis report

Static analysis result for SHA-256 992d083ce6ba2956…

MALICIOUS

PDF

36.9 KB Created: 2020-08-12 08:57:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7625fa0205211cd024f12194bd4c4bba SHA-1: 31738927df5e90dc6c59964de28e9657c8e25bef SHA-256: 992d083ce6ba2956bd9f8b2c62bd21ca2b371c9b8b9f59c6aba476d696fda51c
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, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to manipulate search results or distribute malicious content. The primary malicious URL identified is https://ttraff.com/pify?keyword=brake+test+on+dc+shunt+motor+theory+pdf, which is likely used to redirect users to a harmful destination.

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=brake+test+on+dc+shunt+motor+theory+pdf In PDF document text
    • http://files.capturedgravityphotography.com/uploads/1/3/2/8/132814949/debatirutewasepifi.pdfIn PDF document text
    • http://nubotowo.celestinevessel.com/uploads/1/3/1/4/131453574/ee2404.pdfIn PDF document text
    • http://files.scriptwriters-houston.org/uploads/1/3/1/8/131856086/b10f2cf.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/1/0433/3309/1480/files/jolozumuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/tejopipiwefarin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4130/8320/files/97750859423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2190/0696/files/ranij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6552/3870/files/livro_compreendendo_o_behaviorismo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5594/6655/files/dieta_astringente_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5956/9055/files/18045027481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9586/6024/files/perifemexutut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7602/5510/files/75916974887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/nenozowizebomojigixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71895612735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/substitution_and_ellipsis_exercises.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 6

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_off0000523b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x523B 5576 bytes
SHA-256: 0dd622110f4b0718cf381dcb43d49097c7dd4ecb7af882d50f93fd9f030eccbf
font_01_sfnt_off0000650b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x650B 9828 bytes
SHA-256: a3ac30c23a414d95b7388c1ed4abf33e54adf6e4914866dbd87a215d33ccea74

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