Malicious PDF — malware analysis report

Static analysis result for SHA-256 365908bef0e6bba7…

MALICIOUS

PDF

51.1 KB Created: 2020-10-06 09:33:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 453fc052a584afee50fc29f6233791d3 SHA-1: ff8aea575a64ab16456413db88d60bd7894a2b2d SHA-256: 365908bef0e6bba7b7e4947af3f1f3f7c56010977fa5f7f1036391e4fe92afa6
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.link/pify?keyword=what+does+epsilon+naught+equal In PDF document text
    • https://site-1038357.mozfiles.com/files/1038357/91606224874.pdfIn PDF document text
    • https://site-1037860.mozfiles.com/files/1037860/64074300986.pdfIn PDF document text
    • http://files.krby-godin.sk/uploads/1/3/1/4/131407274/10e6f6fd1d.pdfIn PDF document text
    • http://files.porchfestndg.com/uploads/1/3/2/6/132681946/620d21a.pdfIn PDF document text
    • http://files.anneyleather.com/uploads/1/3/1/0/131070646/5653176.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/2a8dfdcd-3963-4e40-86f5-57be57b8069b/65470210226.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdf08cd7-d562-494b-9a1b-3d5a0d335c16/77130656619.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b1ebc0b-4d9b-40cf-9d15-dc86cc240725/96307907987.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/910e0a27-4b59-49e9-a5ba-75b9e396a353/84135297563.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42f0b2f7-b935-44e1-bda2-39deb94f2819/16872701196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8539/2800/files/57035178475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5031/9517/files/avoderm_dog_food_recall.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4652/9945/files/potatudoguripowikiv.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7367 5264 bytes
SHA-256: 44029e69d5f39c6e2a1475961a6f88b436d8a92887fe61327dac7e6f5da62e79
font_01_sfnt_off00008554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8554 10964 bytes
SHA-256: f2df18d353e2aae19140fc1c21ea2f8676581511c0f7badae450834e00c06a14
font_02_sfnt_off0000aafd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAFD 16060 bytes
SHA-256: 713933360072c9d59346590fad668f98c3603c6d2b72ed941ce85481f6af0b74

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