Malicious PDF — malware analysis report

Static analysis result for SHA-256 38a0d2ec7df2579a…

MALICIOUS

PDF

34.3 KB Created: 2020-11-06 20:16:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 046aad7713bd6615a9d1f61db561abee SHA-1: 103eb399a6aebd61e482d5e6767e2b4347fccdc3 SHA-256: 38a0d2ec7df2579aa83d485634e1827ff059868e0c7755c57fc0308e1c243cb9
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/aws?keyword=calculus+swokowski+solution+manual+pdf PDF link annotation
    • https://nudiwosesi.weebly.com/uploads/1/3/4/3/134317077/vudan.pdfIn PDF document text
    • https://zavamemedu.weebly.com/uploads/1/3/4/3/134305249/tobodu.pdfIn PDF document text
    • https://bolefapazudakaj.weebly.com/uploads/1/3/4/4/134478960/dexozojunawi.pdfIn PDF document text
    • https://tifalexax.weebly.com/uploads/1/3/4/4/134471923/684359ccc857.pdfIn PDF document text
    • https://gidixelasulam.weebly.com/uploads/1/3/0/7/130739099/viwuzusosekojeviwito.pdfIn PDF document text
    • https://judiwufafa.weebly.com/uploads/1/3/3/9/133999980/laximipuxemu.pdfIn PDF document text
    • https://lunejuwibamir.weebly.com/uploads/1/3/4/5/134587588/nitoxuvililu.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/4ca0743a-1ba5-4d0e-9bc7-743a2e692b89/kanixupifo.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/6486242731.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65ed347f-0a02-4df2-a176-666ed2992c56/fnh_slp_mk1_tactical.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fd73a04-ab8a-4ec6-9308-e5eefe9c1df2/5e_air_elemental.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_off000047fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47FB 5264 bytes
SHA-256: c133652928400b5ff411a07cb0b771882dda7ac26497fecd5b753cf15110b139
font_01_sfnt_off000059e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E5 10248 bytes
SHA-256: 73cddcfa85c3e0b83d0c91246131dadce9ab6303b49d0ad4f73a20c2353d7be5