Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f053aed85dd8080…

MALICIOUS

PDF

47.2 KB Created: 2020-10-15 11:53:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ce2e13d3c3e510feb26cc518d02484ea SHA-1: 48f11be309ec496767cf337571c257ff69e78c23 SHA-256: 7f053aed85dd808048ebdf47f5bc48b56f25851e150a9948b1cc6e29708fd1e6
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://ttraff.link/pify?keyword=marvel+contest+of+champion+mod+apk+obb In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/0c18874847f.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/gitetomuvi_toleko_gerusiletufal_lineredigawutog.pdfIn PDF document text
    • https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/8441923.pdfIn PDF document text
    • https://site-1040095.mozfiles.com/files/1040095/dedatipawajinakuzeva.pdfIn PDF document text
    • https://site-1037026.mozfiles.com/files/1037026/zopegelisukadovuxux.pdfIn PDF document text
    • https://site-1038759.mozfiles.com/files/1038759/80262858456.pdfIn PDF document text
    • https://site-1043970.mozfiles.com/files/1043970/xebosadonusugigatonimi.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/2122744.pdfIn PDF document text
    • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/b628c54eef4e3.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/1/0437/9050/0001/files/spy_whatsapp_apk_file.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5032bfb4-bb7c-45f9-8f22-356c29416af6/rizusaligoretibinax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdd5d263-c31b-41de-92a8-14ec4db6856b/5441411595.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a75bb208-642e-49ed-93fa-953fe500f7f5/mamesutemajamovamabalaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc21319d-f037-421e-9d73-fe228e8134c7/25051370199.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f399bbd0-90ef-4933-8599-70f5e4f4045c/97240884376.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CF 5664 bytes
SHA-256: 74f3cf210e4cee9430528b57b1ccf5c9d45871d7d173596b5a822a4d9f87ad90
font_01_sfnt_off000077e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E7 10120 bytes
SHA-256: 4ac12c4ddfc762404ba630467951ad365e6bbebd226c6714ec3e444016b47226
font_02_sfnt_off00009ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AB1 16136 bytes
SHA-256: b87dc9cf3f55aeef5ecd96a4f5a0c8a661d1f6fea33ffedf98a3be0636a851a5

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