Malicious PDF — malware analysis report

Static analysis result for SHA-256 d395e3aee2f48bf0…

MALICIOUS

PDF

40.9 KB Created: 2020-09-09 16:48:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d4d970680cc3f9fac8efc44e22d37287 SHA-1: 633c3d988a583f394ffa2816e216fb429537072f SHA-256: d395e3aee2f48bf05bdb05038e0c59b1962e28cd6093b10411265c87f4c7a637
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, characteristic of a link farm used for SEO poisoning. The presence of a 'download button' lure further supports the malicious intent. The primary malicious URL is https://ttraff.club/wix?keyword=ceiling+function+in+crystal+reports, which redirects to other potentially malicious content.

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.club/wix?keyword=ceiling+function+in+crystal+reports In PDF document text
    • http://files.yallbeetubin.com/uploads/1/3/0/7/130775025/215eb6dfa.pdfIn PDF document text
    • http://files.northwestindianaoutdoors.org/uploads/1/3/1/1/131164519/metekasoxij.pdfIn PDF document text
    • http://files.stmatthiasonline.org/uploads/1/3/1/4/131455475/pesukabakiguzep_vafixabit_bizikoras.pdfIn PDF document text
    • http://files.hcaknights.com/uploads/1/3/2/6/132682232/2585195.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/735424_35e2d7544ddc46f7ad8ff48f6e4e2a9d.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8451/2418/files/direct_indirect_speech_practice_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/xizuxekasulixamowugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4445/4051/files/canon_rebel_t6_video_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/9007/4788/files/mozilla_firefox_for_windows_xp_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7447/7464/files/93066943376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/91101642771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9424/9377/files/bearing_puller_skf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1141/3912/files/zomojuvizatevewa.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 7

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_off00006194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6194 5192 bytes
SHA-256: 8f357fd5e0f85e725c30a40e2ade40ed9c181514b2600e2ea9da785add54390a
font_01_sfnt_off0000735f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x735F 10420 bytes
SHA-256: 96a553126452bd31900c56d40619a9798adb0d4098a1a1961f7abd27df4341b2

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