Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9b50495009b9481…

MALICIOUS

PDF

43.3 KB Created: 2020-10-14 23:21:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 12dd3b2d607c3fa6fb93bd695098bcb3 SHA-1: d2482aaafaceb14a37366daaa8f9db41852d7fec SHA-256: b9b50495009b9481a4274160b9e1100138d57581cf51a28b57f2221c11131e29
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.club/pify?keyword=amalgamation+of+banks+pdf In PDF document text
    • https://tejigenunonim.weebly.com/uploads/1/3/0/8/130813632/8869537.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/1429013.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/gitetomuvi_toleko_gerusiletufal_lineredigawutog.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/fisewoludemadijop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366047/normal_5f86fc83ab558.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367303/normal_5f8744240f008.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f873ed4cc82c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367310/normal_5f874ce4db4b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f8713364a927.pdfIn PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/tutigimuxewovif.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/a8401ec7a9859.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/wirexanusir.pdfIn PDF document text
    • https://site-1036881.mozfiles.com/files/1036881/27293011453.pdfIn PDF document text
    • https://site-1039133.mozfiles.com/files/1039133/vosapiposekipovaguvoxefu.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/1cff03f9-1c77-4c92-a871-32dd549f4979/rodexilazesujobukitejo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09a3f896-d766-44a7-852d-37b7889b2671/witajit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1275/8426/files/44297706640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/93758746278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/1947/2543/files/roxy_theater_lebanon_tn_phone_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0870/6725/files/84971424704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0649/3350/files/lg_l41c_manual.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_off00006acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACB 5460 bytes
SHA-256: d8c75fdc046ad5613c4976d95556d9bd8d47293d3d6d50152439954def25987c
font_01_sfnt_off00007d44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D44 10128 bytes
SHA-256: 4bb35ebe04875e215f4417e72746b5bc4bde981de2005f9e5928967aa1e54f49