Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d5eced361c00121…

MALICIOUS

PDF

42.9 KB Created: 2020-10-04 21:56:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ba371742d79aefe4c3ad82fb2042f8ee SHA-1: dba0e24d028769377c8718d678ae342b0b504eca SHA-256: 5d5eced361c00121cd6e0de7eca57e68318e1778f7ec203384d6af2960bc6339
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to disposable domains and redirector infrastructure, indicating a link farm designed to distribute malicious content. The presence of a 'download button' lure further supports the malicious intent. The primary redirector URL is https://ggtraff.ru/strik?keyword=game+beach+head+2002+full+free, which is likely used to deliver a second-stage payload.

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://ggtraff.ru/strik?keyword=game+beach+head+2002+full+free In PDF document text
    • http://files.shoalhavenhighschoollibrary.com/uploads/1/3/1/4/131438392/8bc96e1a3b194b3.pdfIn PDF document text
    • http://files.mommyinla.com/uploads/1/3/1/0/131070313/6d969efe1666b7.pdfIn PDF document text
    • http://files.pjspuppies.com/uploads/1/3/1/6/131637224/fizezo.pdfIn PDF document text
    • http://files.hendersonconcretecontractors.com/uploads/1/3/1/6/131606260/c1bfa95e9bd.pdfIn PDF document text
    • http://files.affordableallwoodcabinets.com/uploads/1/3/1/6/131636587/7549726.pdfIn PDF document text
    • http://files.freddiesroadhouse.com/uploads/1/3/1/6/131606890/wuzeromubuzux_texuf_bojomemimig.pdfIn PDF document text
    • http://metomilef.htxphotography.com/uploads/1/3/1/3/131378950/wabamegopezibu.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/1/0481/4281/1289/files/bay_leaf_wreath_how_to_make.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9232/9119/files/78138588885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1636/2904/files/99570128627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9477/6739/files/platinum_dragon_dnd_breath_weapon.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_off000069b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B2 5528 bytes
SHA-256: ffc32c0aeb88f1f0b361c78a3873e1990fc69d22d4794f1ebe584f2c0bafbd90
font_01_sfnt_off00007c54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C54 10224 bytes
SHA-256: 6c62a59da50d8f7e620c4db5679b8d07b0a6a65ac9f1aeb1c4a07f2788a4f744

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