Malicious PDF — malware analysis report

Static analysis result for SHA-256 8431bd3f146f6628…

MALICIOUS

PDF

43.0 KB Created: 2020-10-09 02:03:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8872be646740b5d25f0b88939d03e71c SHA-1: 23a19006183eb721cbf159184852b4c101a471e7 SHA-256: 8431bd3f146f6628cfcf508b384955dcce090c769bdcb16c754f132529dedda9
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://gettraff.ru/pify?keyword=river+patterns+in+geography In PDF document text
    • http://rozitad.n2d.shop/uploads/1/3/1/0/131069839/ca21b60a7d.pdfIn PDF document text
    • http://files.nodaplarchive.com/uploads/1/3/1/1/131163540/jimawopele_jikujikuwemo_juvelivojawigu_pibixagu.pdfIn PDF document text
    • http://files.mariaevagorou.com/uploads/1/3/1/4/131437100/jifuravegozizam.pdfIn PDF document text
    • http://files.annasboldjewellerydesign.com/uploads/1/3/1/6/131636969/xituxiworuxaxomawag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0778/9221/files/fear_inventory_worksheet_aa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9984/0921/files/dragon_ball_z_tcg_price_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1112/1063/files/tenumibepurotesuzezogibe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0b37e9f-38bd-4b43-859f-452d37c27290/54015172362.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3305adb2-11a5-44af-8c31-44e0709fc70f/75241396035.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e600a1db-2ede-41fc-acee-1c491bf38d8c/fuxokigupofokofoxudekiwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5800d5e1-88ed-489e-89b7-097bb1c129d4/9318750548.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32ba5308-c5a3-4743-9e04-a73748893764/risajozix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55ba4f82-4d2d-4070-8fcf-f650d3b52ab1/fegilev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d6dd30f-d7ea-4413-bb7b-9a0c6acf655b/31570546697.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c92c16c-2bb3-42a4-8282-371bb96ce58f/zafikozikepojor.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_off00006974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6974 5220 bytes
SHA-256: 0d2bedf1edf8645f33265a1c135e3f8d57f1144d31afe74b7f2b15f2e3de15b6
font_01_sfnt_off00007b44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B44 10528 bytes
SHA-256: 4a520da5b5612011cef252e6e9f7890a929efef7dc5b50f59f8de2171fc6b4ac

Open this report in the interactive analyzer, or submit your own file for analysis.