Malicious PDF — malware analysis report

Static analysis result for SHA-256 e62c67cbc502afef…

MALICIOUS

PDF

51.1 KB Created: 2020-10-07 16:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 8c72ce6100964becfb88b30409291714 SHA-1: 717298a30e8b169ab9bc7ea10dd84e6351e0e5f7 SHA-256: e62c67cbc502afefe41ae1dbceec668c749f12c473c57b954d02fda52917fe9b
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?keyword=skyway+bridge+fishing+reports In PDF document text
    • https://site-1045415.mozfiles.com/files/1045415/85914586655.pdfIn PDF document text
    • https://site-1039517.mozfiles.com/files/1039517/47613860538.pdfIn PDF document text
    • https://site-1037882.mozfiles.com/files/1037882/piwomipuzovoz.pdfIn PDF document text
    • https://site-1043172.mozfiles.com/files/1043172/gefixomemujojikolefafir.pdfIn PDF document text
    • https://site-1038460.mozfiles.com/files/1038460/31458295803.pdfIn PDF document text
    • http://files.handsonhexham.co.uk/uploads/1/3/0/9/130969411/dinoladakaka.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/1/0467/5249/7827/files/47264753396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1873/4746/files/bezemoxorifesi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6915220f-67f4-4c24-8382-bbb7b457b715/40732379282.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cb56575-4dd7-47b9-8c1e-69bb424b8625/savizax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/979f8614-f98d-4024-b69e-85dec4345dcf/tililaxurejunuwuzukadapex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a5c1cb5-2cda-4bbd-b9c6-c54a1bb9afba/kelisugol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc980dd5-8b94-4932-8e22-bc350455a0c5/55360639347.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_off00007d49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D49 2828 bytes
SHA-256: 4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9
font_01_sfnt_off00008744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8744 5772 bytes
SHA-256: 7b3aaf0dac86705b3688bbc039c258900e36fad3125c935748741026bd49b954
font_02_sfnt_off00009afe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AFE 10688 bytes
SHA-256: 6c2524f9e1dbdbeb7bbaa0e4d08511ad8eba3749783a71feee9858d3b9b03ec2