Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7ba723fe364c81…

MALICIOUS

PDF

41.4 KB Created: 2020-10-12 13:16:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 50ca1aef3580ae18ea51908e72c2f085 SHA-1: 0ade62c5873907c75f4de25b7b09a0c58a7f3d9a SHA-256: 1e7ba723fe364c8178186e870231ea45cdaf77a08865952f5c47b57bb1627fa6
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cctraff.ru/pify?keyword=ola+auto+download+apk In PDF document text
    • http://files.artsbykhamoshi.com/uploads/1/3/1/4/131453253/mozok.pdfIn PDF document text
    • http://files.rechipes.com/uploads/1/3/1/4/131410939/werumugeve.pdfIn PDF document text
    • http://files.barbarabrewstersos.com/uploads/1/3/1/8/131871817/gibukukafufirimuk.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/5a94a713-2680-4c64-a0c0-6e2cffb64aa5/melawabadituvirawup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf6d018e-8b9b-416c-9154-eadb9009b8d8/dasowozijuzus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2ccb6ae-3daa-478f-b2ed-f45b3c4f2b05/67870788837.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60af2893-7371-437d-8ea4-e501b026c745/xezolokoposisajerilifuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2520/3868/files/18828907397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9843/1381/files/viking_battery_charger_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0020/3936/files/15820203743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9047/1832/files/frontline_commando_d_day_mod_apk_happymod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/7320/0028/files/5559011154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7063/6710/files/rededibusubexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0957/9429/files/game_of_thrones_office_pool_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2344/5411/files/xelezizutajipegibivab.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_off00006539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6539 4864 bytes
SHA-256: 4a90118c5d6f915c48d8c11af0712b75897071a371f8697d444b5762ee9fed1e
font_01_sfnt_off000075e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E9 10300 bytes
SHA-256: 754de028618a307c2e442bb9237fbb2875229f1208138314dafe41cdfaff5da3

Open this report in the interactive analyzer, or submit your own file for analysis.