Malicious PDF — malware analysis report

Static analysis result for SHA-256 1913f898726296cf…

MALICIOUS

PDF

116.7 KB Created: 2020-10-24 06:51:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: 9087d52c03cf7871199021cfe6fcb69d SHA-1: 433cf8409f894724ead74cbc732ce784c54fbd75 SHA-256: 1913f898726296cf70f79c1ece9715838d263f23f2a3ea072eae751cb95681bf
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://gettraff.ru/strik?keyword=encyclopedia+britannica+latest+edition+free In PDF document text
    • https://devuzagobeli.weebly.com/uploads/1/3/4/4/134431767/gavisokuke.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/novovuxosijuzuz_wofabunutigepuw_dugulelura.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/7331740.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379971/normal_5f914aa889f93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368953/normal_5f899639160e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369932/normal_5f87e7c402c70.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7092/1150/files/blodgett_zephaire_g_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/7301/0364/files/sketchup_2020_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2308/1378/files/21725242250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7980/6375/files/jipug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5de189cc-61cb-42ea-b8ae-b010d117e0ae/61065690243.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd51afcb-4bf5-4aff-9a02-9a1e8b0e9270/3339067583.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a58b1785-6455-4dd1-9036-31e05fd38ca0/darefelefuriwalurofo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39215144-3f67-4581-ab06-f14ee884796a/kenudorixijuzaxenofuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8341cea8-bd91-4fe8-9449-e55b0719dcf0/denapudalefuwugevone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d629fa67-2e84-4d07-82dc-e08021ff46c4/calculus_made_easy_martin_gardner_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5095/7461/files/81035976007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0862/9659/files/historia_del_guerrero_y_la_cautiva_resumen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8361/9232/files/sap_fiori_strategy_standards_and_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3774/4552/files/life_of_pi_summary_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2506/1272/files/danugeriborefe.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001783a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1783A 5136 bytes
SHA-256: d1dfe6798b1f5a2d84459654561f8b7dea73a78da8c951f15f977b0a18016708
font_01_sfnt_off000189b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x189B6 14344 bytes
SHA-256: 9cf85a0382522d9c4881d79beaeca9fb7f364e232816e5a01a1787290fead5bd
font_02_sfnt_off0001b61e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B61E 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361