Malicious PDF — malware analysis report

Static analysis result for SHA-256 83c47485abd48911…

MALICIOUS

PDF

40.7 KB Created: 2020-08-04 00:39:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79891c3cfaaf0579e6705454e2cf8c17 SHA-1: 88bc94347c1f09aaa005bf905e305942e0983a55 SHA-256: 83c47485abd48911b90312c97b77f2d9153990f30f65cdbfdd3a50e55dea7fb8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a malicious infrastructure, identified as a redirector and a link farm. The document body, though partially corrupted, suggests a lure related to 'exercises pdf with answers'. The primary malicious URL, https://ttraff.ru/pify?keyword=a+an+the+no+article+exercises+pdf+with+answers, is flagged as a malicious redirector. While no scripts were directly extracted, the PDF structure and embedded links indicate an attempt to lead users to malicious content, likely for phishing or malware distribution.

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=a+an+the+no+article+exercises+pdf+with+answers In PDF document text
    • http://files.coastvalleyworship.com/uploads/1/3/0/7/130775518/5865774.pdfIn PDF document text
    • http://files.ikargb.co.uk/uploads/1/3/1/4/131409170/c416f2d8c877.pdfIn PDF document text
    • http://files.elisakohanski.com/uploads/1/3/0/9/130969471/ribawewi-ximepubolikuvez-wurinu-ketidezewapedu.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/1/0432/0342/8510/files/wunoxatataninipibusude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/79086372433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90841244024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/83657899145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/bovudaxuxupiviteb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3727/5813/files/topolijimezemojer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0745/1042/files/1516862165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4321/5767/files/nike_build_smite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1739/5611/files/davumasozimutazop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6359/7466/files/xenulekamerugosurevuluro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0635/9714/files/72987745563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8202/3061/files/jigujasebi.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_off00005c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C60 5392 bytes
SHA-256: 08808732ad775ada1f421917e8b01c1c83f7edb08a96900056e74d1e19344fef
font_01_sfnt_off00006ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECB 12084 bytes
SHA-256: 9e06165ce1bff2330bb7a550e6235b6a136514fd65496551738441e1f0aad244

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