Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00151d8764bf2a2…

MALICIOUS

PDF

61.7 KB Created: 2020-10-26 01:00:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 45b6bd2a65b863aba17730d8c0094819 SHA-1: 87b93a93ce3d33d343a2db80130dbbe191594640 SHA-256: d00151d8764bf2a25d4f89aa4273c7b66835d201a9c17ba81f2a8a46851cede6
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://ggtraff.ru/aws?keyword=cultura+anglosajona+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379616/normal_5f8cf6704398b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368991/normal_5f8d58fc3d70c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370294/normal_5f8bc00025b62.pdfIn PDF document text
    • https://rikisuluwujufa.weebly.com/uploads/1/3/1/4/131452938/21736d4514.pdfIn PDF document text
    • https://dafalozurevibi.weebly.com/uploads/1/3/4/3/134308304/cacf9f60f17c.pdfIn PDF document text
    • https://xijonezamo.weebly.com/uploads/1/3/1/4/131407630/6600921.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://s3.amazonaws.com/wiwamoxamo/linear_algebra_history.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/addition_worksheets_for_grade_5.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/anticancer_drugs_journal.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/mupapona.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/94101002032.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/acidity_of_alkynes.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/saxelusejo.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/25777780558.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/91311488873.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/cell_organelle_flashcards.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/36273968818.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/3250963124.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/articulacion_de_chopart_y_lisfranc.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/potateriviwotenawosukugum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5837/0991/files/ration_card_demo_form_up.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/4961/9103/files/the_grief_recovery_handbook_in_spanish.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_off0000a2f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2F9 5024 bytes
SHA-256: 03accf4b33a44b0efcea32df373d9435f88982cd2ae610d558842ae438c1eede
font_01_sfnt_off0000b41f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB41F 11888 bytes
SHA-256: 724bacd7837bfdab56c9b17cdb89ae2d194aa8721bcab129449a2dd32a077542
font_02_sfnt_off0000dafa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFA 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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