Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a35e29d5159cd6b…

MALICIOUS

PDF

40.2 KB Created: 2020-11-06 14:01:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 67b6f50ada0499632b08ac8fa97ea25f SHA-1: b40c3f9a2d81f219b7813acf1c559624d39185ad SHA-256: 8a35e29d5159cd6bd632b94148a6aabf663fa50e473efb168f312cfc2cc6976d
74 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?keyword=morpheus+apk+download PDF link annotation
    • https://zipalusub.weebly.com/uploads/1/3/4/3/134343211/1159806.pdfIn PDF document text
    • https://sonedolab.weebly.com/uploads/1/3/4/6/134630530/4958cd1d83.pdfIn PDF document text
    • https://latenenagizogip.weebly.com/uploads/1/3/2/6/132696064/romodo_pojumukozagezi_wezisawobejugaf_vilukoxujokup.pdfIn PDF document text
    • https://bekonerotukabi.weebly.com/uploads/1/3/4/3/134366377/vipoluf_muwatus_bawuri.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/892d2ca4465.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/simunu.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/8644811.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/1/0268/8375/2128/files/twin_full_futon_bunk_bed_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/ucsd_mae_171a.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6681c04-089e-45cd-9523-8699c0b5d8b0/22716881616.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/99210817099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2479/6829/files/temperatura_normal_del_cuerpo_humano_en_grados_fahrenheit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70edb49d-2f1a-4fd4-8f2d-b0ee6008c60a/omega_ruby_how_to_catch_all_legendaries.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_off00005db3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB3 5208 bytes
SHA-256: 1b90c73d54f136580e9e23f36dd2668dfc31980f97ddb122bd0bb37afe09db09
font_01_sfnt_off00006f78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F78 10880 bytes
SHA-256: 8cd04ee7ee312610befe275673a2147ffb456c7b443c9f466c5d5e7d81ecfc12