Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb3027fb948ce82d…

MALICIOUS

PDF

48.9 KB Created: 2020-08-10 04:23:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 662fad18e2c78b7e271fb95558634499 SHA-1: a08017f887e973ffa6b0ad81fe8d24d6fd455c14 SHA-256: cb3027fb948ce82d05533c5d2fb54798cc3dc5538feaab52de41134a206dc151
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, contains text suggesting a lesson plan lure and includes the malicious URL. The primary malicious URL, https://ttraff.com/pify?keyword=relative+clauses+lesson+plan+pdf, is likely used to redirect users to a phishing or malware distribution site. The presence of a link farm further supports the malicious intent.

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=relative+clauses+lesson+plan+pdf In PDF document text
    • http://files.hartig.com/uploads/1/3/1/0/131070674/towizinizamule_jojoponiwozavo.pdfIn PDF document text
    • http://files.u-surge.net/uploads/1/3/1/4/131438477/tojud.pdfIn PDF document text
    • http://files.cflucktraining.com/uploads/1/3/0/8/130813841/407394.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/1/0435/5905/9615/files/roxajabidexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/benami_property_transactions_act_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3081/3592/files/similar_words_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9623/5415/files/enciclopedia_britannica_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3365514284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0928/6050/files/vosuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3796/4960/files/annex_8_icao.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3531/0752/files/16118009635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9969/0910/files/creative_writing_assignments_for_middle_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8651/9195/files/vepafaweridofuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2986/4343/files/graphic_design_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9633/2705/files/popofixamev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6020/8540/files/stihl_fs45_parts_diagram_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5286/6463/files/98176346051.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8220 5120 bytes
SHA-256: bdde57f6dd4710c247fca23a235371811bcd29d951bfbd4aff4122701b18057d
font_01_sfnt_off000093b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93B0 10240 bytes
SHA-256: 158b9d7c4bf16b96cbe8645ce85cf25530c7fff20f84914e086315e5432dc55b

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