Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b412a5ed3c5b5e…

MALICIOUS

PDF

44.7 KB Created: 2020-08-07 04:18:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fd5dd88af73eb46a961d5994843bed5b SHA-1: 5568e45bccf5fc4ef9bb4bd9e2ef87060baa6206 SHA-256: e0b412a5ed3c5b5e4ae6819cff99cdd5a3d317451c98831f5f725ca4d463e1c3
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.com/pify?keyword=michelle+beatles+guitar+pdf In PDF document text
    • http://files.dianaferreiraceramics.com/uploads/1/3/1/3/131381414/rusazexedasep-sumosimamefusex-pedaguviwowu-mavixudumuruwes.pdfIn PDF document text
    • http://files.pemawest.org/uploads/1/3/1/4/131406749/93adeff70dab7.pdfIn PDF document text
    • http://files.grettawilson.com/uploads/1/3/1/4/131437351/5306487.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://cdn.shopify.com/s/files/1/0435/3366/4408/files/61694464981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6875/2023/files/28422645578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4990/9415/files/node_js_tutorials_point_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2395/7144/files/gowuzodebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5622/5686/files/55553779602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5370/9472/files/edit_nightbot_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/vojifanitarizubemotax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/93726240830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7264/2460/files/classifying_triangles_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5286/7494/files/xisin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0486/files/64348237389.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_off000063cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CB 5228 bytes
SHA-256: 9819691df2afd02c9eda91cc74810fbf540216afeb2d1475f18a448c60082367
font_01_sfnt_off0000759d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x759D 10040 bytes
SHA-256: 86980022404f93e379bd75121dea043efc9ab9121309fe3b900fd0d19d2bf24d
font_02_sfnt_off000097ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97EE 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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