Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f6280d1d6d7bd14…

MALICIOUS

PDF

34.3 KB Created: 2020-08-20 18:09:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 219df35d78d6965602b37ab91702ddc1 SHA-1: 7f8d66912179f576f5ac0bdd3b66b9288eeae5cf SHA-256: 1f6280d1d6d7bd14ecc1965a15bfbbb91f9af24ce018e96d7f5689e385824c0e
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as an educational resource. This indicates a social engineering attempt to lead the user to malicious content. The ML classifier strongly supports the malicious nature of this PDF. The presence of numerous external links, many pointing to Shopify-hosted PDFs, suggests a link farm or SEO poisoning technique to improve search engine visibility for malicious content.

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=english+worksheet+for+ukg+students In PDF document text
    • http://files.texassurf.net/uploads/1/3/2/8/132814050/viribufaw.pdfIn PDF document text
    • http://files.shuswapvalleyestates.com/uploads/1/3/2/6/132683140/eb5700fb8.pdfIn PDF document text
    • http://morug.andrewsimspiano.com/uploads/1/3/0/7/130775565/2597e.pdfIn PDF document text
    • http://files.lexvonsumayo.com/uploads/1/3/1/4/131414743/vevug_zatuvifutalog.pdfIn PDF document text
    • http://files.angelfacejewellery.com/uploads/1/3/1/4/131406841/xemujegivim.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/1/0439/2140/8168/files/2155251492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0545/1174/files/38081876737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/21st_century_astronomy_4th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8466/7297/files/wuxubojuturodakuxato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4093/1991/files/www._dpe._gov._bd_result_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6744/0294/files/visual_studio_express_2012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7013/6230/files/kudunebuveri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/tampa_alissa_nutting_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7862/2111/files/benisupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3231/9899/files/defaults_write_com._apple._finder_appleshowallfiles_yes.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_off00004bbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BBC 5072 bytes
SHA-256: cd5b6b16ddf32907e9e05b2f51436b8af48b52d5f8cfea4bc0add8dcc202b711
font_01_sfnt_off00005d07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D07 9172 bytes
SHA-256: 51891071d05ef14aa76ce069316f73004e90eec4c49896eb5e78648c18acda5d

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