Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec3efc13e0881aaa…

MALICIOUS

PDF

40.5 KB Created: 2020-11-01 05:08:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 73e81e16f8ca3709ade80f85ff2d4c4b SHA-1: 959d8de823af6d8349cf1ab992714ecc324bc09b SHA-256: ec3efc13e0881aaa4be60c37d46e3706f78ef8e8f9d7d5f9f48ccfbc6aa83edd
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/123?keyword=types+of+sarees+in+maharashtra In PDF document text
    • https://dokakida.weebly.com/uploads/1/3/1/3/131380589/33e165fce2.pdfIn PDF document text
    • https://jojimixumomural.weebly.com/uploads/1/3/4/4/134438106/52450.pdfIn PDF document text
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/dusobikimomu.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/b5e743f2.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/1/0492/9975/1071/files/melhor_app_para_aprender_ingles_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f40c99a-d055-4b60-88ab-2582a9541fad/pufipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/7504/1948/files/50275924186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2971/2029/files/pobowalupiwutipebelidaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8544/0170/files/zitukomifolo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d91e0a03-7777-46bb-afe8-718afa62063d/josezugebobebukitij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8336/6047/files/libro_de_plantas_medicinales_de_bolivia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1161559b-1832-4922-8667-f894d908cd68/watch_adventure_time_season_4_episode_18.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000627a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627A 5160 bytes
SHA-256: 353a522c398c97f7134b0dd536433c738dc88db54da8b429d5e77d208309d271
font_01_sfnt_off000073e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E7 9960 bytes
SHA-256: 076e819bb074b41bf0495fc87fc0473a275420e26a0edd7b3a88e386301bbcf1

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