Malicious PDF — malware analysis report

Static analysis result for SHA-256 648fd4077d32b3d0…

MALICIOUS

PDF

52.1 KB Created: 2020-08-26 22:52:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 569e097c851c27bcc14d237ce1e0f638 SHA-1: 5ff3680826d824c8bab1dbdcc38d07e222edb303 SHA-256: 648fd4077d32b3d04dafcdb8d464d7656169b08c7b2ee27d3eb841449ec8bb08
194 Risk Score

Malware Insights

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

This PDF file exhibits malicious behavior by employing SEO link farming and redirector links, specifically pointing to 'ttraff.com', to lure users into downloading further content. The embedded document body text, though partially corrupted, contains a URL that mirrors the malicious redirector, suggesting an attempt to disguise the malicious intent. The ML classifier strongly flagged this PDF as malicious, reinforcing the assessment of its harmful nature.

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=ccna+collaboration+cicd+210-060+official+cert+guide+pdf In PDF document text
    • http://xinafoz.miniphysio.co/uploads/1/3/0/7/130739163/643956486.pdfIn PDF document text
    • http://ruzepas.aes-tx.com/uploads/1/3/2/8/132816036/f98e81f6056.pdfIn PDF document text
    • http://files.midtowntorontotherapy.com/uploads/1/3/1/1/131164488/fikegawok-bosuluwazifez.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/1/0432/4923/8178/files/28223315619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/27708613425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3756/4823/files/gawosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/atresia_pulmonar_con_septum_intacto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/pirozipasoripaselizev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6678/4932/files/vegamoxolinegavaxujexoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7098/0247/files/kefox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3010/8567/files/52140247704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0611/6511/files/college_algebra_beecher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4434/7802/files/checklist_for_moving_house.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_off00008c72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C72 5700 bytes
SHA-256: 2aa254d10ee4a49821fa96955718d399827ed35a06076a6314dc08eaac806d61
font_01_sfnt_off00009fe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE8 10312 bytes
SHA-256: 1d5e491a3785a82e1edf04a0329dc9a9ab01afbaf9c25bd0be492224b056fbaa

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