Malicious PDF — malware analysis report

Static analysis result for SHA-256 20817fbd014251fd…

MALICIOUS

PDF

47.9 KB Created: 2020-08-08 12:48:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31f3db0189bf2e999213605ceb1d422b SHA-1: b7554decf3e53f9f5eaaeb6ba2d418b31a74512c SHA-256: 20817fbd014251fdbad9a9ea9e9633b2f29dd4fbf4508bf869bd8477bd217107
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to a malicious site. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to improve SEO for malicious content. The ML classifier also 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=bolsa+mexicana+de+valores+historia+pdf In PDF document text
    • http://barutesow.assisted-living-resources.com/uploads/1/3/1/4/131453194/45e3028e546e.pdfIn PDF document text
    • http://files.waupungymnastics.com/uploads/1/3/0/7/130776883/pigafideda.pdfIn PDF document text
    • http://files.bepureinsideandout.com/uploads/1/3/1/4/131438888/c6f453eec687153.pdfIn PDF document text
    • http://files.classicgatemakers.com/uploads/1/3/0/7/130739766/fubilujegimi-zopib.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/1/0428/1755/2543/files/82914422573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3256/4132/files/ccna_2_chapter_1_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dutevitijenunolekegek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/69241029407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6624/4766/files/subinefebagejajomop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3271/4139/files/gobadefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2102/3904/files/honeywell_thermostat_login.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5454/6594/files/exercices_corrigs_les_bascules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9878/3382/files/virginia_beach_fishing_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8216/2084/files/78618636308.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 4

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_off00006d8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8C 5572 bytes
SHA-256: 30360d58f20fd8c5a51f01d9dff5f7c9fdca0bfb23bfe6921c1d882458cea342
font_01_sfnt_off00008062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8062 15936 bytes
SHA-256: ae4bc2813ba2a558da819bb7eddd05116a16359532f36455cd375b2a3259f852

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