Malicious PDF — malware analysis report

Static analysis result for SHA-256 63cd1d93879cf028…

MALICIOUS

PDF

43.3 KB Created: 2020-08-15 03:30:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a3231a94fb4e58fb8c3043f7e30cbcc3 SHA-1: 8121b2376c5094591bc338aecd0872699a83d3af SHA-256: 63cd1d93879cf028f5e766e7086e532eb84cb52085de62395ddce9c62cc3163f
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that is flagged as malicious. This suggests a phishing or scam attempt, likely using the 'human anatomy terminology pdf' keyword to lure victims. The presence of many Shopify-hosted PDF links indicates a link farm strategy to improve search engine ranking for malicious content. No scripts were extracted from this sample.

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=human+anatomy+terminology+pdf In PDF document text
    • http://files.celebratedancepro.com/uploads/1/3/1/1/131163834/noxoretuwo.pdfIn PDF document text
    • http://files.tmwmassage.net/uploads/1/3/2/6/132695280/1331536.pdfIn PDF document text
    • http://guxavinu.failurefarms.com/uploads/1/3/0/7/130776277/kimugad_kesarukukeniz_tojonadudemuli_gaxalenitumu.pdfIn PDF document text
    • http://files.thefeelgoodcafe.com/uploads/1/3/0/7/130739509/4754442.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/1/0438/3732/5462/files/64755389538.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9511/3374/files/52870118483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wabodenerevugibew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3000/2336/files/tuwosesoboli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1899/3307/files/legofofalenabuligijiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5370/9472/files/social_emotional_and_behavioural_disorders.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/dojosegofov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/40551763963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/dogak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7313/2961/files/animal_lyrics_neon_trees.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8003629611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5622/5694/files/jekovuza.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 1

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_off00006cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD6 5244 bytes
SHA-256: 6a53d6b91e3c528712c735f0a8d6b60e293082dc00584fa399c1308fcd6eacd8
font_01_sfnt_off00007e99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E99 9960 bytes
SHA-256: 619602af542e46915dbc3936df1f2b80ed24ae1be65bf301281f1d1aadf60748

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