Malicious PDF — malware analysis report

Static analysis result for SHA-256 a066d71f0e64f69e…

MALICIOUS

PDF

51.4 KB Created: 2020-08-04 05:36:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 333232dab11789059ce60f3888ecf794 SHA-1: 2a15658736f3f214b3df619e16e7addb4463bffb SHA-256: a066d71f0e64f69e8bd25e16e3c2efe74e726b6a026237c39b4fdee332630a23
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, many of which point to external PDF files hosted on various domains. One of these URLs, 'https://ttraff.com/pify?keyword=energias+alternativas+en+colombia+pdf', is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body appears to be obfuscated or corrupted, but the presence of numerous links suggests a link farm or redirection strategy to lead users to 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=energias+alternativas+en+colombia+pdf In PDF document text
    • http://vajup.cheshiredem.org/uploads/1/3/1/4/131408029/durakad_sekarorobo_taxadeso.pdfIn PDF document text
    • http://files.hannahtylerdesigns.com/uploads/1/3/1/4/131406234/lipawuvugafogid_sojinizolekedo_jeposonebitiva.pdfIn PDF document text
    • http://files.countrysongfarm.com/uploads/1/3/1/4/131408364/kogiv.pdfIn PDF document text
    • http://files.rolesvillehsband.com/uploads/1/3/1/8/131856276/7420843.pdfIn PDF document text
    • http://files.thirtyninetyliving.com/uploads/1/3/2/8/132814415/39236.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/1/0440/4504/1814/files/blue_prism_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/ridulakezamulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/vatijubulodosiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuvuwagel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pejuzesuloroxutebed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2042/5115/files/datastage_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0423/0805/files/tifas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8944/4510/files/46332550468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/75569306837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tokon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1114/4861/files/dasoridezipexemofepogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6150/2362/files/3297778905.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 5

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_off00007c50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C50 5632 bytes
SHA-256: ad25f156d98f4e443ad2d5377ac8938617eb37ddeae36b16f09c04c8800320f2
font_01_sfnt_off00008f68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F68 15936 bytes
SHA-256: 32446ab5c3f1804bac73cf9fc8cb5f8dbe65b8748e2d45ce6f41c6ffddb6a7f1

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