Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7280145335f134e…

MALICIOUS

PDF

44.6 KB Created: 2020-09-30 12:54:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: bf67367a1461178fd76a2657d7162edc SHA-1: edfdac1cdb9c4334c21bf635ea2c29c5abbdbf8e SHA-256: e7280145335f134e62b8050dc0393eabec23ebc0abe10a062b357b28ffc78f85
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://cctraff.ru/strik?keyword=amazing+facts+in+hindi+pdf+download In PDF document text
    • http://malazip.studioandstage.org/uploads/1/3/1/8/131871478/6002423.pdfIn PDF document text
    • http://files.peaceelc.com/uploads/1/3/1/3/131381658/limajefowa-datixanifedo-wipulowifonozam.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/1/0438/7300/9819/files/a_user_s_guide_to_principal_components_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4642/0136/files/jabodifekofepubire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/35194147167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3751/6191/files/9015137321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8596/3168/files/vevulotizezixijubi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0eb0e371-6171-4886-bbb6-563c52b5e4be/36163154200.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8273457d-81f3-44c1-8696-a219653c94da/zesupapemizun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4745/files/dupadigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/33527266233.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_off00006207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6207 5272 bytes
SHA-256: 998d4b7ea285decb64d8bfea4f835b75f24f9b2b2f95ac721636b16e72459ed7
font_01_sfnt_off000073dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73DD 10376 bytes
SHA-256: 34d1c3a1529753dc010b083358e194236a961863ac80e6424c68f2cad8802219
font_02_sfnt_off0000971f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x971F 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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