Malicious PDF — malware analysis report

Static analysis result for SHA-256 46fa0370d9ce6dec…

MALICIOUS

PDF

40.0 KB Created: 2020-11-07 18:53:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 1fc251b3afb858cd14f3b5a278fc8f0f SHA-1: 467cd38f254535fb05681d02db72367a870d5774 SHA-256: 46fa0370d9ce6dec8138feb59db0fb0be8a361096a946e9a65061145592bf163
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://traffking.ru/123?keyword=liftmaster+garage+door+opener+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4443619/normal_5fa16d068b4b6.pdfIn PDF document text
    • https://kugixixubeleji.weebly.com/uploads/1/3/4/3/134324677/e00ff35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369512/normal_5f87c7e392d93.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nefagolom/2019_nfl_draft_results.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24d60b3b-f7f0-4fb5-83e6-5ea9240e7e84/vafopidokafazivi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7090ac34-f5c3-4555-8819-7cd31b658522/97829168401.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/need_for_speed_underground_2_ps4.pdfIn PDF document text
    • https://sisiviweze.files.wordpress.com/2020/11/goresosuvufat.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/xoluxibatoguroguvukides.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/61815277649.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/y3_sqrt_x_graph.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/domitula.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/16357439136.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45cd71cb-fc7f-49d2-b3db-422c7070f81b/tefaruwitematopilutepupa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1a6924c-9869-43f0-96c3-b704000bbb4d/a_gentle_introduction_to_stata.pdfIn PDF document text
    • https://manetomimexa.files.wordpress.com/2020/11/68091325827.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_off00005cd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD7 5300 bytes
SHA-256: af75983984a43b800f09ff65a7c49d33927091db9bb17d6f47c6b263564a35f8
font_01_sfnt_off00006ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECB 10684 bytes
SHA-256: adbc9cec84238e762b0ae077afebd3e2fbcd2cd1e19d227b2b1048aa269ecfec

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