Malicious PDF — malware analysis report

Static analysis result for SHA-256 a906e1599b9f766f…

MALICIOUS

PDF

41.4 KB Created: 2020-08-28 07:18:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 50c3e8b4c65985135191a8beef39c874 SHA-1: 6dd8706895ffaaebb6690751262d06fe13ac06b2 SHA-256: a906e1599b9f766f112f73a69a9e65023b58934c02e5474b95b7d9f6b745bdce
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.link/pify?keyword=tabla+de+dobleces+y+traslapes+de+var'. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites. The document body itself is heavily obfuscated and contains a URL that appears to be the primary lure.

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.link/pify?keyword=tabla+de+dobleces+y+traslapes+de+var In PDF document text
    • http://fugob.santekorwestisland.com/uploads/1/3/0/8/130814088/morisu_jirisasabe_putuxafafip_resizelaxuma.pdfIn PDF document text
    • http://files.eileap.com/uploads/1/3/1/6/131637255/xeweze.pdfIn PDF document text
    • http://files.cecilyscloset.org/uploads/1/3/1/6/131606035/dixalitefuxu.pdfIn PDF document text
    • http://ridifir.loveadelyn.com/uploads/1/3/0/9/130969525/5402300.pdfIn PDF document text
    • http://xumivelob.cheerycards.com/uploads/1/3/1/4/131483152/26ee7454e2ed4.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/1/0439/1596/8667/files/catia_v5_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0045/3541/files/93006049853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7618/5253/files/61269446285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1909/8523/files/utrack_online_gpx_track_report_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4395/3563/files/hd_tv_antenna_buying_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4721/4486/files/66486997927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/ambliopia_ex_anopsia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2015/5037/files/44896186076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7896/5656/files/online_cv_maker_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3331/2925/files/87067838735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2641/4749/files/html_option_tag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3755/5864/files/75887730575.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 8

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_off00006242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6242 5320 bytes
SHA-256: 9db5b3678235cad30479ad069fdda5eca784deeaa80e5e88ce158df14e6075c9
font_01_sfnt_off00007469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7469 11192 bytes
SHA-256: 247f8b78c384456045bbf1a8fa8c78f1afda14e94b47ecd41b53a3742e8744e5

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