Malicious PDF — malware analysis report

Static analysis result for SHA-256 b989cf1ad478a5fa…

MALICIOUS

PDF

42.8 KB Created: 2020-08-06 07:14:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 61a9cac6c200eea54766e38c62e36762 SHA-1: 3cf609ea0bf3e0e59ea0867aa94e709ae1784231 SHA-256: b989cf1ad478a5fac58c60941b03a1adfa4beb9f3a194348017feccc77c6f864
194 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to malicious infrastructure, specifically a URL associated with a redirector. The document body, though heavily obfuscated, contains text related to 'csp back pain exercises pdf' and the malicious URL itself, suggesting a lure to trick users into clicking. The presence of numerous external PDF links further indicates a link farm or SEO poisoning tactic to distribute the 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=csp+back+pain+exercises+pdf In PDF document text
    • http://files.tear-a-page.com/uploads/1/3/0/7/130738714/simeminom_rujozugexezaw.pdfIn PDF document text
    • http://todegozo.punabaptistchurch.org/uploads/1/3/2/3/132303189/debisadow_lelufut_velapisi.pdfIn PDF document text
    • http://files.lungtaworld.com/uploads/1/3/0/9/130969681/mafowuboni.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/1/0431/0899/1140/files/zonedidekomud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/56020961200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/pinulagogefuzodobefiponel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/40749861779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5291/5098/files/jilodinofirusebak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niwaragevutaxesidep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/17111905214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/vufosizemolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20745245188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6710/4668/files/psychology_11th_edition_carole_wade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7424/7069/files/kumemuwunasobezoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6404/2396/files/kogezesafejinikufap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6076/3555/files/zisaki.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 2

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_off000068d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D2 5292 bytes
SHA-256: 1bdca25f3fa0c45707d83488c494d6229541badb53aef8f1fcc83d7eca1548e6
font_01_sfnt_off00007ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE0 10288 bytes
SHA-256: 480ac333b03931fd027a184123ba07d8ffb7733fad0c774f983aea13e0162374

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