Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac25746777bd54f2…

MALICIOUS

PDF

40.1 KB Created: 2020-08-19 14:40:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eeb351cdae41ea4a797e85dea838874f SHA-1: 2fe087410c304e9973b882f64e24251a7cf407c2 SHA-256: ac25746777bd54f2ce646a8f4c4e53d6b95e8beb18c34767f29ff0baf3a7f17b
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic indicating it contains a large number of external links, forming a link farm. One of these links, 'https://ttraff.cc/pify?keyword=android+floating+action+button+icon+size', is identified as a known malicious redirector. The document body contains obfuscated text and numerous URLs, suggesting an attempt to lure users to malicious content. 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.cc/pify?keyword=android+floating+action+button+icon+size In PDF document text
    • http://rasok.whldesign.com/uploads/1/3/0/7/130775195/d105212.pdfIn PDF document text
    • http://files.johnirwinsonlinebusiness.com/uploads/1/3/0/8/130814980/3392290.pdfIn PDF document text
    • http://datimoli.northforkpoa.org/uploads/1/3/1/3/131379591/zofotalapoli.pdfIn PDF document text
    • http://kogofetu.oraclefinancialgroup.com/uploads/1/3/0/7/130774965/pudavotebadegodukola.pdfIn PDF document text
    • http://files.zuowenjie.net/uploads/1/3/2/3/132303163/ed091d.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/1/0432/9881/6160/files/kafam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/97156120607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/2762/4099/files/26271132771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7875/files/biwajilal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7369/2063/files/t_and_v_system_of_extension.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7474/0639/files/toyota_camry_2020_maintenance_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2122/1539/files/baka_to_test_light_novel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5282/5750/files/lysistrata_play.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/wijuxezidowatik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5837/8392/files/90609332960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9254/8515/files/sda_hymnal.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_off000052a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52A2 5368 bytes
SHA-256: 632d64af2802735a7f856533ba988d096f5b3700cc586f937623ff517673fc5d
font_01_sfnt_off000064f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F4 15060 bytes
SHA-256: be90cb8a492f0fc3f205c60317ff7366ec3cbab1513dad8117e37a8637d4d9bb

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