Malicious PDF — malware analysis report

Static analysis result for SHA-256 94c5fbf078046456…

MALICIOUS

PDF

46.1 KB Created: 2020-08-24 23:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e63f367cbbc88bacd9359d88c17a7d73 SHA-1: 96f94c6a585b01ee7f5e040baf8a3da2e71aeda5 SHA-256: 94c5fbf0780464563eb8aa46c2c82ddc88a716bada345f13fb033995107e68f8
202 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, suggesting a phishing or malware distribution attempt. The document body, though corrupted, contains text related to an 'answer key', which is a common lure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=answer+key+up+police+2018+morning+shift, which is likely used to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=answer+key+up+police+2018+morning+shift In PDF document text
    • http://files.foundationfirsthorsemanship.com/uploads/1/3/1/6/131636642/4296050.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3290/3829/files/whatsapp_ke_video_karna_hai.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0451/0887/files/copernicus_revolution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5194/0000/files/yulgang_global_mobile_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/85535935006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/ca_ipcc_gst_amendments_for_nov_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4285/5319/files/kukiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2812/7654/files/36382321143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4190/5050/files/wenugikemedirubaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/sodiremajuwivudovinidetes.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 5

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A90 5988 bytes
SHA-256: e22e124131af99ec6d107ca7c021ed253d3a6266ab8dc83934b615478295acf6
font_01_sfnt_off00006eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEC 10076 bytes
SHA-256: e7e7edeb72acdb7057e422ad1a6785517abff74a8c33ed55fc1593787eb01ed0
font_02_sfnt_off00009194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9194 7676 bytes
SHA-256: c22ebb94c29709220397f192544a12af3e1268adcbb8d3ce89678cdb3374c9c8

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