Malicious PDF — malware analysis report

Static analysis result for SHA-256 e48cedd79d2c3009…

MALICIOUS

PDF

44.2 KB Created: 2020-11-07 13:39:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: a1cb5e7f1127b5270d6f4e7fe90f266f SHA-1: 723d8d0d603b144499bd41ec6710d0e441ac349a SHA-256: e48cedd79d2c30095c64a5e1bb2b496d89ecd99bf681908bc4276095678e514d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=author+richard+paul+evans+the+walk+series PDF link annotation
    • https://losikopak.weebly.com/uploads/1/3/4/6/134616488/tagibatutu.pdfIn PDF document text
    • https://kexinebig.weebly.com/uploads/1/3/4/3/134338338/dezirefawovuje.pdfIn PDF document text
    • https://tatunonomufobuf.weebly.com/uploads/1/3/4/3/134355176/4373796.pdfIn PDF document text
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/2333419.pdfIn PDF document text
    • https://xodetawutal.weebly.com/uploads/1/3/0/7/130774968/rinevanogusu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://pavokido.files.wordpress.com/2020/11/attestation_letter_of_good_character.pdfIn PDF document text
    • https://wafaruk.files.wordpress.com/2020/11/4518739936.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/donald_duck_in_mathmagic_land_disney.pdfIn PDF document text
    • https://wozexot.files.wordpress.com/2020/11/88630590692.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/zovojugomelat.pdfIn PDF document text
    • https://zixenojolamu982242810.files.wordpress.com/2020/11/meranekilug.pdfIn PDF document text
    • https://zuwumatola.files.wordpress.com/2020/11/fowosodilobulikit.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_off000060f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F9 5364 bytes
SHA-256: 758848a48dc74d4d5efa4d140e390304541ee1e61b011c885b17e5c1f4ba783f
font_01_sfnt_off0000734b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x734B 15424 bytes
SHA-256: 63fb62cf0cd260a04ce1d461a5cc454bde1300831111b4eab21cf8887060d048