Malicious PDF — malware analysis report

Static analysis result for SHA-256 d197afdacb6fe529…

MALICIOUS

PDF

43.0 KB Created: 2020-08-14 08:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5d5319949ac7c917a10192ff669e45cd SHA-1: a044781a55065ed3a340934da38eb48c83646d5a SHA-256: d197afdacb6fe52926f926eb01764fe90a6926cf4f93ea51eda60dedfd9a0899
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains references to URLs that appear to be part of a link farm designed to manipulate search engine results and direct users to potentially harmful content. The primary attack pattern observed is the use of a link farm within a PDF to redirect users to malicious sites.

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/wb?keyword=protocols%20in%20computer%20networks%20pdf In PDF document text
    • http://files.sueannecelebrant.com/uploads/1/3/1/4/131437351/26ff42c.pdfIn PDF document text
    • http://zofove.bridgit-dengel-gaspard.com/uploads/1/3/2/6/132680813/xekoxopetugir-dudasowezabonid.pdfIn PDF document text
    • http://files.valortabletennis.com/uploads/1/3/1/8/131856232/sajosijebubumut-loludulabin-jezigizejupiga.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/1/0433/1018/6654/files/american_gods_francais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2839/7728/files/13099725664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/0426/9468/files/mobile_application_development_black_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/august_month_current_affairs_gradeup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/general_electric_renewable_energy_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/pojezuwawaxazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/dijaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6388/3429/files/369096322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8922/2045/files/wifumazavegobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/28397521888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4892/6364/files/xforce_adobe_2015_keygen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/cfa_curriculum_level_2.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_off00006101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6101 5248 bytes
SHA-256: b762ca84aaf7a89ef85938ca2983633521e150215ffd40a20ab02a82bef170b6
font_01_sfnt_off000072d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D5 14376 bytes
SHA-256: 556c67b7d09a35428708b5d4ecfb327e03c752215f6434dda19ac2e983fd849d

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