Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbdc089c98e507e5…

MALICIOUS

PDF

43.3 KB Created: 2020-10-28 18:08:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: c13a8b9aa99d8b08ab649fa076f272df SHA-1: 37ed6d97f218bbd8b690b5eca544aa75955aee3f SHA-256: fbdc089c98e507e5e84b6370f3e0a3dd35afca3fbf67b9c118503dbf9e84b99d
194 Risk Score

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.me/pify?keyword=the+phoenix+project+spanish+edition+pdf+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4385230/normal_5f9637d378846.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417138/normal_5f9758ae5ac93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403561/normal_5f96eeda38bac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374847/normal_5f985a066e914.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b1d5c17-408e-45ec-be16-10fc1a56cbc9/virogupixomalopivuxes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3822/3769/files/44576458818.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/el_camino_del_artista_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43de3617-4499-47c0-bceb-d5204514144f/64529169443.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5433c24c-d2a8-4fdc-a6dc-b0b347952b84/67160543436.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/cause_and_effect_matrix_for_fire_alarm_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aba3345-ee1b-4f66-8710-e1ddc1caf4ef/87242979891.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9dcf84a-ca71-4c74-8dcc-5c231b7d85af/tuzizodilefizapin.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/41491179566.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/101_reasons_to_use_legalshield.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/1689/1797/files/erosion_and_sediment_control_handbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd8ce892-6ec6-46d4-8f0f-d8aa31524630/i_fuck_sluts_bo_burnham.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9287/5695/files/contact_list_app_in_android_studio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4291/3955/files/wredling_middle_school_map.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/wataxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/baafdacf-e31c-4012-9171-f6dfe16d9716/zosedukasisasip.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/ridley_creek_state_park_camping.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1673/0799/files/viva_video_app_download_for_android_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c5e94ea-8d78-4884-ab4f-9afd67071abf/zunifilofaxawozukobite.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_off0000674d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x674D 5428 bytes
SHA-256: 657ac014df28e9e712118172583850ce78779aaf97f668920a4981ad2b0326d6
font_01_sfnt_off000079d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D9 11084 bytes
SHA-256: a3c06ca2cab8f88bdc5c6b27de0207fcfeda172a406aa5338d95a674fcd67ee1