Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd85dbf5949d48ba…

MALICIOUS

PDF

63.9 KB Created: 2020-08-06 11:22:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8266a05a04eda8cf8b8f92bc701462a SHA-1: 013ceba2da7c4168ac616c2c4aea196a345d01d4 SHA-256: cd85dbf5949d48ba40a515e140316d73a951e2d7461277b7652026c561106dda
194 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and heuristics indicate it functions as a malicious redirector and a link farm. The document body contains a URL that redirects to a known malicious service, and numerous other links point to external PDF files, suggesting a distribution or SEO manipulation scheme. 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=standar+nasional+akreditasi+rumah+sakit+edisi+1+pdf In PDF document text
    • http://files.artintr.com/uploads/1/3/1/4/131406390/lovewow_xizulidil_marafu.pdfIn PDF document text
    • http://files.glitzandglamllc.com/uploads/1/3/0/7/130739658/3654669.pdfIn PDF document text
    • http://files.elysianbotanica.org/uploads/1/3/2/7/132741149/0a97859e3fec98.pdfIn PDF document text
    • http://files.hilltaxis.co.uk/uploads/1/3/2/3/132303359/vijepepuwiki.pdfIn PDF document text
    • http://files.allaspectsrestoredandrecycled.com/uploads/1/3/1/3/131398428/muluginetapadi-gabujuwoni-lufus-zonekulodu.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0432/0795/0495/files/gozakinuzezawife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0298/5622/files/99162692242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4841/8971/files/98245801285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7296/2203/files/tasajelopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8389/0850/files/gukefamigomogol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1572/4456/files/sasofawizow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7274/1791/files/favojezuvogup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3823/5031/files/bizifebilarolodote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4012/6614/files/37332321463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2846/2240/files/40232957982.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB315 1728 bytes
SHA-256: ea5f39a4ceba791772aa2f4814517dd5722aeea733a01686da649f7090e18245
font_01_sfnt_off0000bb31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB31 5500 bytes
SHA-256: 33308e5e171807e2598fb1513f32ea8c047873254a5397a8bc0f912d409537af
font_02_sfnt_off0000cdc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDC0 10652 bytes
SHA-256: 726f4d11ddaa24e3d6918f29b4e943a0f7cf7b91603ee5e4dd15a6ac2e0754fa

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