Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e7ddde5cabbd85…

MALICIOUS

PDF

43.0 KB Created: 2020-10-27 05:52:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 198d7f90d079e69daf57d93ccb589877 SHA-1: 99c850269c0d3876e77a37d76976ff294acb693d SHA-256: 60e7ddde5cabbd859c1dbdedf283d7c723a53642e5b34af223b3e83578539d0e
184 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 hosting or known malicious redirectors. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL suggests an attempt to lead the user to a malicious site. No scripts were extracted, but the document's structure and embedded links are indicative of a phishing or redirection campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.link/123?keyword=manual+drill+tool In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5f8883f7ad65a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383322/normal_5f8d8b1c1a1ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f8a685187a0c.pdfIn PDF document text
    • https://murepofolod.weebly.com/uploads/1/3/4/4/134480544/5087525.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/e27909d0be.pdfIn PDF document text
    • https://siveruvamavekug.weebly.com/uploads/1/3/4/2/134266289/xotenakafarasod_xanuvod_jararofev_suxuboxu.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/885b97041590.pdfIn PDF document text
    • https://ralubimuxafoku.weebly.com/uploads/1/3/4/3/134373731/4353727.pdfIn PDF document text
    • https://gurigibafex.weebly.com/uploads/1/3/0/7/130739571/lajesiwijonelex_tigojawax_kisebig.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/0d82251e-31e4-4cca-b14a-387af657f7a6/runozom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fe75d3e-865b-47f7-bdd9-043f5c871c1d/72867063324.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbea30bd-b254-486a-9cdb-2490511a9691/life_of_the_party_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1673/0799/files/wubuwepitimedaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2252/3805/files/video_converter_android_application_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/9329714598.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/rocomamas_drinks_menu_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/vivafapakiwosabexoxagu.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/fifodafowurifipawixunumod.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_off00006a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7C 4648 bytes
SHA-256: cd8de9223c769cff34f233f16e04a9035bca7e6604f9d8d5b815d5cabdcca55e
font_01_sfnt_off00007a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A54 10868 bytes
SHA-256: e3c79ba9c7c20d0647fd38345c2d560c983de2c16f7178758a9bf2dfa93f904c