Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7ac147f7494ca2a…

MALICIOUS

PDF

40.9 KB Created: 2020-09-17 00:48:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2e96b987168f3b6f2b8b6fc3e851669b SHA-1: a4091b79062d160052fa094c356a931c50b53d82 SHA-256: c7ac147f7494ca2a719434cd95985dbaa348c70bb54b3f097c707d2921283862
194 Risk Score

Malware Insights

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

The PDF document was flagged as malicious due to its extensive use of external links, forming a link farm. One prominent URL, 'https://ttraff.club/wix?keyword=crazy+pixel+games+unblocked', appears to be a redirector. The document body, though heavily obfuscated, contains this same URL, suggesting an attempt to lure users with game-related content towards a malicious destination. The ML classifier strongly supported the malicious verdict.

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.club/wix?keyword=crazy+pixel+games+unblocked In PDF document text
    • http://files.pageantsbymindy.com/uploads/1/3/1/4/131454620/1145522.pdfIn PDF document text
    • http://zusefifeg.liviskitchen.net/uploads/1/3/2/7/132740594/486eb3e751.pdfIn PDF document text
    • http://files.rspfitness.com/uploads/1/3/1/6/131606325/xexadofumexasep_norixijasalit_jizesux_guwapode.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/1/0437/6995/4456/files/tomapetatoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9753/8203/files/kamajusok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7759/1449/files/fopusuwete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/6381/6604/files/50725272595.pdfIn PDF document text
    • https://95f263a8-653c-4da7-af54-452c747d1225.filesusr.com/ugd/5f5755_aef394c209dc4a91937a3cc7f7dc96ed.pdf?index=trueIn PDF document text
    • https://56e81ff9-0ca2-4b12-9412-a304dfd2a63d.filesusr.com/ugd/3eed2b_655ec108670a484cba84d58cfc2b1aee.pdf?index=trueIn PDF document text
    • https://57167097-cafa-4e1d-9249-32cd2bd879ca.filesusr.com/ugd/dbbfd0_d01d703049bd4254b082063008b638e3.pdf?index=trueIn PDF document text
    • https://138ac612-ae68-4673-81b5-f9e8fbf9966d.filesusr.com/ugd/33ab24_16aa0af066ab412496c9bb42f6a23da0.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8073/6150/files/tulsa_tv_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/astral_upvc_pipe_fittings_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7967/7590/files/93801292381.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 8

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_off00005fb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB5 5720 bytes
SHA-256: d751d54bd9d86fc607929e03e92eda19cff01c448ad70c35c01a7e252ccb5ec9
font_01_sfnt_off00007329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7329 10420 bytes
SHA-256: bd2d591c3fd13c4a536ca0964d4d7e89ef7278c3998373074a8f1c1d676c1c47

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