Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fb2b259b2aba3d1…

MALICIOUS

PDF

44.8 KB Created: 2020-08-25 04:46:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2afbe734994b5920f98739ad202fdd65 SHA-1: a03f61f4553eb1094b756c622d22fb6b045358fb SHA-256: 5fb2b259b2aba3d1c6e7a766223d102531dc5f7971295ee4a3f6ccf165570bc8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a large number of embedded links, many pointing to a redirector service, indicating a link farm or SEO manipulation tactic. The primary redirector URL is identified as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious content, likely for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious.

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.cc/pify?keyword=formato+certificado+de+origen+mexico+estados+unidos In PDF document text
    • http://files.dowdystaxidermy.com/uploads/1/3/0/7/130740298/mowupugugomijib.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/1/0437/9312/1442/files/jumibakowezix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6755/5481/files/2551131230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1125/0075/files/nigukepexake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/tujanowuteza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3021/6855/files/sawogilopuxezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2097/4242/files/37570473282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/7042/3968/files/manual_chevrolet_aveo_sedan_2005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6262/3394/files/63069011643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4926/8886/files/vomamasezijafixupuwifer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2249/0532/files/tarixubitojufif.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 7

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_off000063db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63DB 5332 bytes
SHA-256: 6853f2d608adac9852d6c4b82c503b9c63d83325cdc51336e95fc0f6a4fc7c26
font_01_sfnt_off000075de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75DE 4440 bytes
SHA-256: 46e166e31ef9cb48a3e1d3d026bb4ccc80b32ca948f3414fd2576cbc621802f1
font_02_sfnt_off000081c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81C5 11184 bytes
SHA-256: 5b8dcec25d3136f5ceed7326225022f2e724c26cd30bb3a9e8ce6ed5540da025

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