Malicious PDF — malware analysis report

Static analysis result for SHA-256 faac93fa7e8e20d7…

MALICIOUS

PDF

39.1 KB Created: 2020-08-17 01:20:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a3c5eb9f2814bae674ef7f7ea081cc27 SHA-1: fa60c79bc88c86d9ab26b35d143b8eca8afd0f07 SHA-256: faac93fa7e8e20d751d758f3a604be77f54cf17433e85bd5ce443f281ab9642a
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external PDF links, indicating a link farm. The primary malicious URL identified is ttraff.ru, which is known for redirecting to malicious content. The document body, though heavily obfuscated, contains this URL and other Shopify-hosted PDF links, suggesting a lure to download further 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.ru/pify?keyword=scholastic+lexile+guided+reading+conversion+chart In PDF document text
    • http://files.thunderdiscountdrug.com/uploads/1/3/2/7/132740352/7316638.pdfIn PDF document text
    • http://gegowavo.hippiechickband.com/uploads/1/3/1/3/131398003/serovokove.pdfIn PDF document text
    • http://feduwe.sinclair-emergence.com/uploads/1/3/0/7/130776138/4569166.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/1/0428/0408/4899/files/zupuxinukof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5013/files/55229562013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3182/2485/files/betking_betting_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7909/0855/files/danulegalogigojizadezusid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/6791/1842/files/chaupai_sahib_nanaksar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0462/4021/files/nufom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7285/5967/files/pajetefibedilasujenup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5673/4109/files/57693352587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2398/5828/files/artificial_intelligence_tutorial_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0749/8647/files/45121878165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9071/4532/files/88563502788.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 1

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_off00005999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5999 5432 bytes
SHA-256: ce01a15282835051061dd7600748a915f528d6fc22170b6f157dd46d71abf342
font_01_sfnt_off00006c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C07 10328 bytes
SHA-256: 1d29d5c24da19a6753a5c81fd2fb0760a1ba61124c062f135cdf263245454385

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