Malicious PDF — malware analysis report

Static analysis result for SHA-256 e184d777d0a19643…

MALICIOUS

PDF

32.9 KB Created: 2020-09-19 01:43:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf05cf4a34e35e9064192e26227df2eb SHA-1: c323e2fbac0fcd17e6dc5a484efcdf20344ce4b4 SHA-256: e184d777d0a19643df28b9cdcf59805d53a90680bd5cf391b486756b35336fae
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which point to disposable hosting and are likely part of a link farm. One of these links is identified as a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.link/wix?keyword=black+%2526+decker+auto+pivot+vac+pav1200w+target In PDF document text
    • http://files.harperperformance.co.uk/uploads/1/3/1/3/131380625/6e86943cf.pdfIn PDF document text
    • http://files.homesweetfarmschool.com/uploads/1/3/1/8/131857723/vuzowilosaxurap.pdfIn PDF document text
    • http://barigab.flourishkiwi.com/uploads/1/3/2/6/132695663/nuvul-gojufuperufagav-xumebakexas.pdfIn PDF document text
    • http://files.wildrelys.com/uploads/1/3/0/7/130740442/25911f4.pdfIn PDF document text
    • http://files.kirklandadventuregscamp.com/uploads/1/3/1/4/131437671/jimiz.pdfIn PDF document text
    • http://dafirozoz.patriciawilkins-vacca.com/uploads/1/3/1/3/131383839/ef5de4c.pdfIn PDF document text
    • http://migok.whiteoakumc.org/uploads/1/3/1/3/131398455/2598092.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0f39cbe4-5040-4967-b0b2-0ea15c1508ae.filesusr.com/ugd/724bd4_60f9fc9a9cdd459a8a06fadaaca803d2.pdf?index=trueIn PDF document text
    • https://8c1e5fb6-6de2-4e4b-a111-67c4e1733047.filesusr.com/ugd/b6aaa0_2f4f248f203647a096297d60c780410f.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6353/files/lego_heavy_weapons_desert_eagle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4133/9045/files/96520819821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0522/2822/files/95828787902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7911/3635/files/dream_on_aerosmith_guitar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7540/3929/files/niziwekugovosutaxor.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 7

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_off00004601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4601 4624 bytes
SHA-256: 14c652ed39793ddae701c529e61b549b497997b90794930327200f87082b6460
font_01_sfnt_off000055cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55CB 9688 bytes
SHA-256: 3bd98a8fd5bfcb63f642c81d8206fb554d2b1ffa6e3deb155fb2169bcb81385f

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