Malicious PDF — malware analysis report

Static analysis result for SHA-256 a64f21e6a4a7dc3c…

MALICIOUS

PDF

44.2 KB Created: 2020-08-08 19:48:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7fbc9c8b5172a7ab271d0b830d9ef9c0 SHA-1: 36b7507d47efe10a11c395eefd83f74b2fc4a5fb SHA-256: a64f21e6a4a7dc3ca43705671790801a9ac47b3db31ef61ec27b84b19287a5c2
202 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links, including one that redirects to known malicious infrastructure via 'ttraff.cc'. The document body and heuristics indicate a lure for downloading educational content, which is a common tactic for phishing or malware delivery. The presence of a visual download button further supports this malicious workflow.

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.cc/pify?keyword=cbse+class+11+physics+syllabus+pdf+download In PDF document text
    • http://files.movingthroughpeaks.com/uploads/1/3/1/3/131378932/wixexapix.pdfIn PDF document text
    • http://files.rodeoqueenofhearts.shop/uploads/1/3/1/4/131408170/dopasorol.pdfIn PDF document text
    • http://files.campingasseiceira.com/uploads/1/3/1/0/131070485/tetutigafixipa-toxodikexolibi.pdfIn PDF document text
    • http://files.mantleofelijah.org/uploads/1/3/1/4/131406105/01a0c.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/1/0430/3175/6957/files/antonyms_worksheets_for_grade_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9878/3382/files/25214738023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/getting_the_love_you_want.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3275/5875/files/new_holland_472_haybine_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/gutuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/cancer_treatment_protocols.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/9816259640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2385/7824/files/71187129253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4152/9762/files/gopig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/questes_princpios_da_administrao_pblica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7447/7473/files/tabemorixunopul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8014/6339/files/xorijujapavow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0416/6297/files/vesesafema.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D37 5436 bytes
SHA-256: efe6f8104aee828c0a7044e4d25f48d82054ae81a9d87b149846ab09cd0ddd62
font_01_sfnt_off00007fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCD 10980 bytes
SHA-256: 0b70721a5db8b101514a42b8e483c314ae6d87b924db888c935d75bec336f4b0