Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ccdf75db977036b…

MALICIOUS

PDF

41.4 KB Created: 2020-08-19 13:22:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 207ffb3cd02de8ef27a7c98f2dc3143f SHA-1: 5dcde42422cb26f47e38740d6ba41b539d556071 SHA-256: 1ccdf75db977036b439a94766e29f83003afbaf5a75f35f3a71068a66fcc4ab3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF contains a link that redirects to malicious infrastructure, disguised as CCNA sample questions. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the redirector. Additionally, the PDF exhibits characteristics of a link farm, with numerous external links, as indicated by PDF_SEO_LINK_FARM. No scripts were extracted, but the presence of a malicious redirector and the document's deceptive content strongly suggest a phishing or malware delivery attempt.

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.ru/pify?keyword=ccna+sample+questions+pdf In PDF document text
    • http://tijivube.bruinsyouthcheer.org/uploads/1/3/2/6/132695615/7888643.pdfIn PDF document text
    • http://jonute.crosley.com/uploads/1/3/1/1/131164250/gofarubi.pdfIn PDF document text
    • http://files.lorraineparishuptowndowntown.com/uploads/1/3/0/7/130738748/defiguzamilafa-gunirodif-suziwi-dosasakeveva.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/1/0447/9696/9109/files/american_female_names.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5649/6794/files/lopupuxusovedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5661/8917/files/konexofirodekevosig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovetutokukike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4732/0728/files/83061577783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2115/3957/files/aim_training_cs_go_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/zegabudem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4659/8816/files/rubujokusolujetuduz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/abdul_kalam_quotes_in_tamil_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7332/2664/files/bukevodukonexitaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sakumuxapiwitisozu.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 3

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_off00006129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6129 5236 bytes
SHA-256: 07d2c436a5d71e57f0ae4bb9c7a9ef6e1e9b2d4eef3267dfdb2c6a2fafb52698
font_01_sfnt_off000072dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72DD 10796 bytes
SHA-256: d4db6ca6b16b52681977d0f64dbffb4f6135db53225d8e5373d30d027bb659c3

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