Malicious PDF — malware analysis report

Static analysis result for SHA-256 24d619fed78b176c…

MALICIOUS

PDF

41.7 KB Created: 2020-08-07 06:55:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8853e3cdfe13a5e487411692a48d3fd0 SHA-1: b2d39a89c2070293fa0651adc1a3f7adc7ac8345 SHA-256: 24d619fed78b176cb97822da24b7cad519351fb2eeb7dda02134b2267db6a835
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body text and embedded links suggest a lure for downloading content, specifically mentioning 'icao annex download pdf'. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=icao+annex+download+pdf', which is likely used to redirect the user to further malicious sites. The file also exhibits characteristics of a link farm, with many external PDF links.

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=icao+annex+download+pdf In PDF document text
    • http://files.atkinsonathletics.com/uploads/1/3/0/9/130969830/mibinu.pdfIn PDF document text
    • http://files.worldhistorywithmrjohnson.com/uploads/1/3/0/9/130969494/nosotowuleb.pdfIn PDF document text
    • http://files.cizellelouw.com/uploads/1/3/1/4/131406947/saxebit-sonezuvufufuf.pdfIn PDF document text
    • http://files.one21i.com/uploads/1/3/1/4/131482832/kekijoloforese-mivodinebebu.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/1/0435/8176/7841/files/difference_between_c_and_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/88480963232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9650/6521/files/advanced_engineering_mathematics_by_rk_jain_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/kuluzitoxitimebozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1379/9064/files/kawilelamesufefomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7547/7405/files/19341402177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6277/8264/files/applied_descriptive_geometry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8397/2256/files/16439355874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5595/5619/files/58526683623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2240/1192/files/46376704712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5340/6618/files/apc_smart_ups_2200_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/33430596036.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_off000062f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F8 4972 bytes
SHA-256: 92d69d9c4afacf82c840e7ee2d2314dabc94c2c4253e110a510039fdb902d30f
font_01_sfnt_off00007417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7417 11560 bytes
SHA-256: b1658d4bb5d5935d2cd6fbbba74e2c15fb5b93564f280b20fcb5bb503be26bca

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