Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9d6d365d40668e2…

MALICIOUS

PDF

55.6 KB Created: 2020-08-21 23:53:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74231cc0a9d246af2eae0524f62ab421 SHA-1: 89596c4d8c9ca1d49a6ae84728051ca68b56af46 SHA-256: b9d6d365d40668e20b745ee4209b72e2e0c6607d7e7cf314caa9cce5b9464999
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=antimicoticos+pdf+farmacologia'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same redirector URL and keywords related to pharmacology, suggesting a lure to a malicious site. No scripts were extracted from this sample.

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.ru/pify?keyword=antimicoticos+pdf+farmacologia In PDF document text
    • http://files.lagunabeachkitehouse.com/uploads/1/3/0/7/130775432/a0be8338a.pdfIn PDF document text
    • http://files.madtownrent.com/uploads/1/3/0/7/130739769/3142486.pdfIn PDF document text
    • http://zetiso.waterloogutters.com/uploads/1/3/0/8/130873826/sowopupuzepere.pdfIn PDF document text
    • http://files.sharonleegraham.com/uploads/1/3/1/3/131380915/nusador_beragoposozuz_rotejakazerob.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/1/0433/9892/2392/files/98155341671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6462/2242/files/79273835195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7715/7542/files/jivazevosukin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2873/4375/files/lusujumozale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5869/9171/files/bildungsroman_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0544/3237/files/75019370354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5665/9621/files/39928193997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7939/1637/files/sazizulon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/doxemamegesulolulizizit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6958/7104/files/zidakufozatuf.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009bb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB2 5464 bytes
SHA-256: 655df6572abf7d9c4911bf128a97527a79d33ef2430f21aab988dcacef0bc24b
font_01_sfnt_off0000ae26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE26 10440 bytes
SHA-256: 28927d690d1a0d177d61361783f08de6e1385a690da1480d5c516613ba860bc1

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