Malicious PDF — malware analysis report

Static analysis result for SHA-256 8807da4eef5c5583…

MALICIOUS

PDF

67.7 KB Created: 2020-08-06 20:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 40e9f394abbaa8618ae4f5987c04cac4 SHA-1: 40dc8e175058ef080175568a238645f29cd9531e SHA-256: 8807da4eef5c5583f6a9f890fef6f3fd2afe6c3ab6b28cfd93c9addc7dee9734
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are part of a link farm designed to appear as legitimate PDF downloads. The primary malicious link, 'https://ttraff.com/pify?keyword=10+problemas+de+caida+libre+resueltos+pdf', is identified as a redirector to malicious infrastructure. This suggests a phishing or scam attempt leveraging SEO tactics to distribute malware or lead users to malicious sites.

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=10+problemas+de+caida+libre+resueltos+pdf In PDF document text
    • http://files.hypopara-awarenessday.com/uploads/1/3/0/7/130739404/dizukukog-worovesadevosot-zisobifajaruri.pdfIn PDF document text
    • http://files.ukahft.org/uploads/1/3/1/0/131069859/zikavegitevojadolam.pdfIn PDF document text
    • http://satedosek.proc.biz/uploads/1/3/0/7/130738531/5933012.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/1/0432/0064/3236/files/13682185168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gamusuzojikifikukudubug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5509/5712/files/zenojuwifukeseraz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4149/6981/files/when_you_re_gone_avril_lavigne_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7198/0198/files/srph_guild_wars.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1688/7192/files/78398569595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/kingroot_v4_62_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8558/4801/files/gis_tutorial_1_for_arcgis_pro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1185/0918/files/sizuvinurar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9401/6157/files/53249098657.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA741 5540 bytes
SHA-256: 8288f2b5654b5ccb6d8c683e3e39b57d923837623d8b984d6e7bf7c852cbbb6d
font_01_sfnt_off0000b9f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9F9 15584 bytes
SHA-256: 7f232e69b2e38045e3828e0502aec5c5a1971297b2bed35b3b703b53851b2d36
font_02_sfnt_off0000e934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE934 16564 bytes
SHA-256: a9d76f14c7988ac7d5c04d9d6cf48cb51802d8730fd087ac3d10809115dcbc75

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