Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4de78ba36776f9d…

MALICIOUS

PDF

85.7 KB Created: 2021-02-23 08:13:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 90b905da030748078ffc85d3cd7db67c SHA-1: 05ec6d0df8a45f7f55cd6638608cae247c7bc562 SHA-256: b4de78ba36776f9d36080718d854eb5d3234e2277112d133591fa630674489fa
66 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as a link farm. The ML classifier strongly indicates maliciousness, and the presence of external URIs suggests an attempt to redirect the user to malicious content. No scripts were extracted, but the overall structure and heuristic firings point to a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://leonvi.ru/wix?keyword=fiesta+hawaiana+villa+florida+2020+fecha PDF link annotation
    • https://cdn.sqhk.co/gotakavapu/ibGjeja/51250420535.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/hjjbR7R/winter_survival_battleground_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/pE12Ojj/96193413445.pdfIn PDF document text
    • http://trastenmyqort.online/92043510094k7bfb.pdfIn PDF document text
    • http://passive-income.ru/photo_studio_shop_near_mekh1qh.pdfIn PDF document text
    • https://cdn.sqhk.co/pavujakorige/geiiijq/basketball_images_free_download.pdfIn PDF document text
    • http://santand-es.com/98563922385jlnvp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421940/normal_6001d5344d24c.pdfIn PDF document text
    • https://cdn.sqhk.co/munuluxel/hjhgAii/world_war_2_timeline_major_events_1941.pdfIn PDF document text
    • https://cdn.sqhk.co/lewikokezina/hoUYIje/38000735703.pdfIn PDF document text
    • http://zdsshop.top/923033382207k5ni.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fozubogedunok.rf.gd/what_are_the_shared_powers_of_the_house_and_senate.pdfIn PDF document text
    • http://povusesa.rf.gd/9095042023.pdfIn PDF document text
    • http://lixugojobipiwof.epizy.com/why_does_my_canon_scanner_not_work.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A9 5280 bytes
SHA-256: b4c6e2a79662499d13e8976a22a40cc9d69773affa13eb8defe5871393a16fad
font_01_sfnt_off000117a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117A2 10428 bytes
SHA-256: 3c268180bdc4669ede3a5ba25d975304cb62ef84f31247efc61aa397953cf705
font_02_sfnt_off00013b49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B49 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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